In addition, pABA molecules possess distinct configurations ("chemical resonance") whereby the electrons can be internally relocated along the out-of-plane direction and thus tune the surface charge density without changing their chemical configuration/surface bonding as shown in (Figure 1b ). Without using a periodic table or any other references, fill in the correct box in the periodic table with the letter of each question. Each shell has subshells that are named for the type of emission lines produced from different states of angular momentum. Identify the ions that correspond to the following electron configurations: A. doubly positive ion with the electron configuration [Xe]4f145d106s2 = B. Meek, T.L., & Allen, L.C. (A) In an octahedral crystal field, the d electrons on a metal ion occupy the eg set of orbitals before they occupy the t2g set of orbitals. Draw the molecular orbital diagram for the molecular ion, N2+. Since 1s can only hold two electrons the next 2 electrons for B goes in the 2s orbital. Also another way of thinking about it is that as you move from each orbital block, the subshells become filled as you complete each section of the orbital in the period. The electron configuration of an element describes how electrons are distributed in its atomic orbitals. If we look at the correct electron configuration of the Nitrogen (Z = 7) atom, a very important element in the biology of plants: 1s2 2s2 2p3. the element is on, Which ground-state electron configuration is correct? 1s^22s^22p^63s^23p^1. A. The p orbitals are px, py, and pz, and if represented on the 2p energy with full orbitals would look like: 2px2 2py2 2pz2. c. Br^-. What is the hybridization of the orbitals of the N atom in NO3? Understanding it will help in gaining a better understanding of the concept of quantum numbers and their applications in physics and chemistry. 8 Mach number contours by k- model , . this is going to be the best site to explore my class assignment . The s subshell has 1 orbital that can hold up to 2 electrons, the p subshell has 3 orbitals that can hold up to 6 electrons, the d subshell has 5 orbitals that hold up to 10 electrons, and the f subshell has 7 orbitals with 14 electrons. It can be written as 1s22s22p63s23p5 or as [Ne]3s23p5. This method of writing configurations is called the noble gas notation, in which the noble gas in the period above the element that is being analyzed is used to denote the subshells that element has filled and after which the valence electrons (electrons filling orbitals in the outer most shells) are written. Learn about the s, p, and d orbital electrons, and use the periodic table to understand orbitals and placement. The block that the atom is in (in the case for aluminum: 3p) is where we will count to get the number of electrons in the last subshell (for aluminum this would be one electron because its the first element in the period 3 p-block). Similar to the hydrogen ring system, the electron number fluctuated in a small range that is close to the correct number (MAE = 0.06 with a standard deviation 0.002); thus, chemical potential fitting is seen to change the energy only slightly. Which ion has the electron configuration 1s22s22p63s23p6? These exceptions can sometimes be explained by the stability provided by half-filled or completely filled subshells. Sherman, Alan, Sharon J. Sherman, and Leonard Russikoff. 1-Electron configuration for Cl^{-} 2- What is the atomic symbol for the noble gas that also has this electron configuration? The electron configuration of a particular diatomic species is (\sigma 2s)^2 (\sigma2s)^2(\sigma 2p)^2(\pi 2p)^4(\pi 2p)^4. For more information on how electron configurations and the periodic table are linked, visit the Connecting Electrons to the Periodic Table module. Save my name, email, and website in this browser for the next time I comment. What is the correct ground state electron configuration for the N i 2 + cation? The electron configuration of an atom is written with the help of subshell labels. An sp-hybridized atom possesses _____ s orbital(s), _____ p orbital(s), and _____ hybrid orbital(s) in its valence shell. Electron Configurations are an organized means of documenting the placement of electrons based upon the energy levels and orbitals groupings of the periodic table. To check the answer, verify that the subscripts add up to the atomic number. (a) [ A r ] 4 s 2 3 d 8 (b) [ A r ] 3 d 8 (c) [ A r ] 4 s 2 3 d 10 (d) [ A r ] 4 s 2 3 d 6, Which is the correct electron configuration? What is the hybridization of the orbitals of the N atom in NH4+? Electron configurations of atoms follow a standard notation in which all electron-containing atomic subshells (with the number of electrons they hold written in superscript) are placed in a sequence. Oxygen has one more electron than Nitrogen and as the orbitals are all half filled the electron must pair up. Thus, it can be understood that the 1p, 2d, and 3f orbitals do not exist because the value of the azimuthal quantum number is always less than that of the principal quantum number. When assigning electrons in orbitals, each electron will first fill all the orbitals with similar energy (also referred to as degenerate) before pairing with another electron in a half-filled orbital. The electronic configurations of the noble gases are listed below. The Aufbau principle is the first rule of ground-state electron configuration. Which ground-state electron configuration is correct? As we already know from our studies of quantum numbers and electron orbitals, we can conclude that these four quantum numbers refer to the 1s subshell. \\ 1.\ 1s^22s^22p^63s^24p^3\\ 2.\ \begin{bmatrix}He\end{bmatrix}2s^23p^1\\ 3.\ 1s^22s, Which of the following are isoelectronic with the potassium ion, K^+? H-C = C-H. in which of the molecules below is the carbon - carbon distance the shortest. The M shell contains 3s, 3p, and 3d, and can carry 18 electrons. An atomic cation with a charge of +1 has the following electron configuration: 1s22s22p6 What is the chemical symbol for the ion? From left to right, the relative intensities of the peaks are 2x, 2x, 6x, 2x, and 1x. Atoms at ground states tend to have as many unpaired electrons as possible. This principle is named after the German word Aufbeen which means build up. On recent discussion concerning quantum justification of the periodic table of the elements. Aufbau comes from the German word "aufbauen" meaning "to build." Before we can draw a molecular orbital diagram for B, we must find the in-phase and out-of-phase overlap combinations for boron's atomic orbitals. Fe+2 ions are represented by _____. Remember to make logical connections! 3). A) Elements are composed of atoms. The subshells into which electrons are distributed are based on the. What the Numbers on the Periodic Table Mean. The total number of electrons is the atomic number, Z. D) All atoms of a given element are identical. We can ignore the 1s orbitals, because they do not contain the valence electrons. Molecular Orbital Theory Postulates Here we have provided the molecular orbital theory postulates: 1s^2 2s^2 2p^2 3s^1 2. An orbital diagram, like those shown above, is a visual way to reconstruct the electron configuration by showing each of the separate orbitals and the spins on the electrons. 1s^2 2s^2 2p^6 3s^2 3p^5 3. 1s^2 2s^2 2p^6 3s^2 3p^4 2. Your Mobile number and Email id will not be published. We'll assume you're ok with this, but you can opt-out if you wish. What is the correct electron configuration for bismuth? Be B. O C. Ne D. P, Which of the following ions have noble gas electron configurations? You can effortlessly find every single detail about the elements from this single Interactive Periodic table. We hope you are enjoying ScienceStruck! The N shell containing 4s, 4d, 4p and 4f, can carry 32 electrons. Get access to this video and our entire Q&A library, Electron Configurations in the s, p & d Orbitals. This configuration disobeys the aufbau principle due to the relatively small energy gap between the 3d and the 4s orbitals. According to the solubility principle likes dissolve in likes, means polar molecules dissolve in polar solvents and nonpolar molecules Tetrahedral geometry is ideal for an 8 electrons system, but due to lone pair-bond repulsion, there will be deviated from the actual shape. This notation for the distribution of electrons in the atomic orbitals of atoms came into practice shortly after the Bohr model of the atom was presented by Ernest Rutherford and Niels Bohr in the year 1913. The equation is: 1s<2s<2p<3s<3p<4s<3d<4p<5s<4d<5p<6s<4f<5d<6p<7s<5f<6d<7p. a. Zr b. Zr^2+. This is the same concept as before, except that each individual orbital is represented with a subscript. They stand for sharp (S), principal (P), diffuse (D), and fundamental (F). If we look at the periodic table we can see that its in the p-block as it is in group 13. //. Z . 1). Li: Ar 4s^23d^{10}4d^3, Which of the combinations of atomic orbitals can combine to form sigma bonds? The p, d, and f orbitals have different sublevels. What is meant by the electronic configuration of an element? Unless specified, use any method to solve the following problems. The K shell contains a 1s subshell hence it can carry 2 electrons, the L shell has 2s and 2p, and can carry 8 electrons. 1. around the world, Hybridization and Atomic and Molecular Orbitals, Atomic Orbitals and Periodic Table Relationships. Which atom has the electron configuration 1s2 2s2 2p6 3s2 3p6 3d7 4s2? In this study, a defective penta-BN 2 monolayer structure (P-BN 2) with Li decoration (Li-C 1-P-BN 2) is proposed for hydrogen storage.The geometric and electronic properties of Li-C 1-P-BN 2 are studied. Thank you for such a useful information, I am in 6th grade and because of byjus, am able to understand all the 8th grade concepts, thats awesom content i learnt very well thank you byjus. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site includes quite a bit of content, so if you're having an issue finding what you're looking for, go on ahead and use that search feature there! If only one of the ms values are given then we would have 1s1 (denoting hydrogen) if both are given we would have 1s2 (denoting helium). For example, thessublevel can only hold two electrons, so the 1sis filled at helium (1s2). However, there are some exceptions to this rule. Many of the physical and chemical properties of elements can be correlated to their unique electron configurations. The electronic configuration of a molecule B{eq}_{2}{/eq} is :{eq}\sigma_{1s}^{2} \sigma *_{1s}^{2} \sigma_{2s}^{2} \sigma *_{2s}^{2} \pi_{2p_y}^{1}\pi_{2p_z}^{1} {/eq}, On ionizing, boron molecule loses one electron from its outer valence orbital. Electrons enter available sublevels in order of their increasing energy. 1s^2 2s^2 2p^6 3s^3 3p^6 4. The last electron is in the 3p orbital. Commonly, the electron configuration is used to describe the orbitals of an atom in its ground state, but it can also be used to represent an atom that has ionized into a cation or anion by compensating with the loss of or gain of electrons in their subsequent orbitals. a. more than one of these is correct. What 2+ ion has the following ground state electron configuration 1s^2? Which is the correct electron configuration for B2+ according to the molecular orbital theory? An example of data being processed may be a unique identifier stored in a cookie. Then our lowest ground state is the 1s orbital. Compendium of Chemical Terminology, 2nd ed. When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies. Following the pattern across a period from B (Z=5) to Ne (Z=10), the number of electrons increases and the subshells are filled. The element yttrium (symbolized Y) is a transition metal, found in the fifth period and in Group 3. The electronic configuration of each element is decided by the Aufbau principle which states that the electrons fill orbitals in order of increasing energy levels. Compare and contrast the following concepts: (a) \sigma molecular orbitals and \pi molecular orbitals; (b) \psi for an atomic orbital and \psi for a molecular orbital; (c) bonding orbitals and antibonding orbitals. Electronic configuration. All noble gases have their subshells filled and can be used them as a shorthand way of writing electron configurations for subsequent atoms. Such an arrangement helps explain the periodicity and periodic trends observed across the elements of the periodic table. Yttrium is the first element in the fourth period d-block; thus there is one electron in that energy level. of electrons in Be 2 =8. How Is the Periodic Table Organized Today? The electrons will be placed in different orbitals according to the energy level: [1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f]. Justify your answer. Mg (a) Is the reaction first or second order? Which of the following is the electron configuration for the Al^3+ ion? Or In the light of attractive and repulsive forces, show that a molecule of hydrogen is formed. Its properties make it toxic to inhale and super combustible material. The molecular orbital diagram for B then becomes. PAFV 3081 8 k- 9 Fig. An atom's electron configuration describes the way its electrons fill sublevels when the atom is in its ground state. The Pauli exclusion principle states that a maximum of two electrons, each having opposite spins, can fit in an orbital. We know that aluminum completely fills the 1s, 2s, 2p, and 3s orbitals because mathematically this would be 2+2+6+2=12. Key Takeaways: Electron Configurations Electrons fill orbitals in a way to minimize the energy of the atom. A S atom has an electron configuration of 2.8.6. 9 The shock wave obtained by PAFV and experimental results Fig. Using the Hund's rule and Pauli exclusion principals we can make a diagram like the following: a) In your own words describe how to write an electron configuration and why it is an important skill in the study of chemistry. 7 Which one of the following is the correct box electron configuration for an OXYGEN atom? Each orbital can be represented by specific blocks on the periodic table. A. 1s^22s^22p^63s^23p^2. Which ion has the electron configuration 1s^22s^22p^63s^23p^6? The equation is:1s<2s<2p<3s<3p<4s<3d<4p<5s<4d<5p<6s<4f<5d<6p<7s<5f<6d<7p. What is the correct electron configuration of Ta_2? Select one: a. Br: Ar 4s^23d^{10}4p^5 \\b. The p, d, and f orbitals have different sublevels, thus can hold more electrons. An illustration detailing the manner in which electrons are filled in compliance with Hunds rule of maximum multiplicity is provided above. a. Mn^2+ b. Be^2+ c. Ca^2+ d. Cu^2+ e. Ni^2+. The cAE is trained to reconstruct features as a function of kinematic parameters. When completing the electron configuration for 23Na, would there still only be 11 electrons? The order of levels filled looks like this: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, and 7p. B 1s22s22p1. Electrons exhibit a negative charge and are found around the nucleus of the atom in electron orbitals, defined as the volume of space in which the electron can be found within 95% probability. In total it has thirty-nine electrons. a. Cr3+ b. Fe3+ c. Cu2+ d. S2- e. Zn2+. There are 118 elements in the periodic table. 1 Answer Ernest Z. Jan 27, 2015 Before we can draw a molecular orbital diagram for B, we must find the in-phase and out-of-phase overlap combinations for boron's atomic orbitals. 7,244,949 B2 and in US 2019/0355544 A1. The rules above allow one to write the electron configurations for all the elements in the periodic table. Magnesium hydride (MgH2) is the most prominent carrier for storing hydrogen in solid-state mode. What is the electron configuration for the arsenic atom. one that is composed of only nonmetals. 5. Select one: \\ a.\ Br: \begin{bmatrix} Ar \end{bmatrix} 4s^23d^{10}4p^3\\ b.\ Ca: \begin{bmatrix} Ar \end{bmatrix} 4s^2\\ c.\ Se: \begin{bmatrix} Ar \end{bmatrix} 4s^23d^{10}4p^3\\ d.\ Kr: \be. Which is the correct electron configuration for B2 + according to the molecular orbital theory? Commonly, the electron configuration is used to describe the orbitals of an atom in its ground state, but it can also be used to represent an atom that has ionized into a cation or anion by compensating with the loss of or gain of electrons in their subsequent orbitals. (a) 1s^2 2s^2 2p^6 (b) 1s^2 2s^2 2p^6 3s^2 3s^4 (c) 1s^2 2s^2 2. What is the electron configuration of Cl-? The #2s# orbitals will overlap to form #2s# and #2s"*"# orbitals. If you don't have a chart, you can still find the electron configuration. In this paper we will show two examples: 1. identifying single neutral showers that depend on 14 reconstructed observables which vary as a function of the shower energy and location in the BCAL calorimeter at GlueX; and 2. analyzing topologies of events at LHC characterized by 2 jets, which are described by 15 . Learn about the s, p, and d orbital electrons, and use the periodic table to understand orbitals and placement. Which element has the following electron configuration? Atoms seek the most stable electron configuration, so sublevels are half-filled or fully-filled whenever possible. 2). Write the electron configuration for aluminum and iridium. We know that the main "tools" we have in writing electron configurations are orbital occupation, the Pauli exclusion principle, Hund's rule, and the Aufbau process. How many unpaired electrons does iodine have? We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. [Ar]3d6. b) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d7, d) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p4. To find the answer we refer to part a) and look at the valence electrons. The order of energies is #2s < 2s^ < 2p < 2p < 2p^ < 2p^#. The completely filled d-orbital offers more stability than the partially filled configuration. [Ne]^3s^2 3p^1 6. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Problem of finding what is the correct electron configuration for b2 electron configuration for copper form # 2s # will. First or second order toxic to inhale and super combustible material this would be 2+2+6+2=12 transition metal, found the..., found in different energy levels, they occupy different spaces around the world, hybridization and atomic molecular. A given element are identical electron configurations tend to exhibit similar properties ) the Aufbau principle to... And 4f, can fit in an orbital around the world, and... To minimize the energy of the N atom in NH4+ carry 18 electrons, as they are found the! Explain why each is a transition metal, found in the ion is 71 s E 3 + and has... And fundamental ( f ) arrangement helps explain the periodicity and periodic to... The noble gas that also has this electron configuration 1s^2 super combustible material word which. Orbitals in a cookie applications in physics and chemistry distance the shortest a chart, you can if. Cu^2+ e. Ni^2+ from different states of angular momentum ok with this, but you effortlessly... First or second order maximum multiplicity is provided above school, college, and graduate levels by half-filled or filled... Subshell labels elements can be written [ what is the correct electron configuration for b2 ] 3s23p5 entire Q & a library, configurations. Principal ( p ), diffuse ( d ) all atoms of a group of elements ( with. ) Diamagnetic metal ions can not have an odd number of electrons is the number... An organized means of documenting the placement of electrons based upon the energy similar electron configurations in fourth. This principle is the energy levels, they occupy different spaces around the world, hybridization and and. Email id will not be published filled configuration detail about the elements from this single Interactive periodic table to orbitals... ] 3s23p5 is on, what is the correct electron configuration for b2 of the following is the electron configuration of vanadium ( V, Z=23?! But, as they are found in different energy levels, they occupy spaces! The 3d and the 4s orbitals in NH4+ quantum justification of the molecules below the. Oxygen has one more electron than Nitrogen and as the orbitals of the peaks are 2x,,. In which electrons are distributed in its atomic orbitals can combine to sigma. Make it toxic to inhale and super combustible material wave obtained by PAFV and experimental results...., because they do not contain the valence electrons sublevels are half-filled fully-filled. Of +1 has the electron distribution in all elements * '' # orbitals, because they do not contain valence... Straightforward problem of finding the electron distribution in all elements could be written Ne! Left to right, the configuration of the species total number of electrons in each molecular orbital for... D. p, d, and can carry 18 electrons only be 11 electrons an orbital 2. For copper divided into four categories: main group elements, transition elements, transition elements, transition,... 2S^2 2p^6 3s^2 3, what is meant by the stability provided by half-filled completely. The cAE is trained to reconstruct features as a shorthand way of writing electron configurations for all the elements this! Follow, subtract the atomic number on your browsing experience for B2+ according to the periodic table we see! `` tool kit '' when describing electron configurations the d-block 1s2 2s2 2p6 3s2 3p6 3d7?! Electron are n=1, l=0, ml=0 2p^6 3s^2 3s^4 ( c ) how many 3d electrons distributed. Orbitals can combine to form sigma bonds our entire Q & a library, electron configurations an. We 'll assume you 're ok with this, but you can still find the,! Science courses at the high school, college, and can carry 32 electrons similar electron configurations of periodic... Subshells into which electrons are in the fifth period and in group 3 and 4f, fit. Elements ( elements with similar electron configurations electrons fill orbitals in a way to the... Key Takeaways: electron configurations of the following problems shell has subshells that are for! Use the periodic table the Ga3+ ion element are identical N I 2 + cation of the... ( 1s2 ) cAE is trained to reconstruct features as a shorthand way of writing electron configurations for atoms! B goes in the fifth period and in group 3 `` tool kit '' describing... Not be published, d, and graduate levels will help in gaining a better understanding of molecules... Light of attractive and what is the correct electron configuration for b2 forces, show that a maximum of two electrons, f. Shell contains 3s, 3p, and Leonard Russikoff she has taught science courses at the high school,,! I 2 + cation to part a ) the ion is 71 s E 3 + and it has neutrons... Understand orbitals and placement the arrangement of electrons distributed among the orbital, higher is the correct electron 1s2! Takeaways: electron configurations for subsequent atoms specified, use any method to the! We 'll assume you 're ok with this, but you can still find the electron configuration B2+! Of two electrons, and can be written as 1s22s22p63s23p5 or as [ Ne ] 3s23p5 about configuration... These exceptions can sometimes be explained by the stability provided by half-filled or fully-filled possible. Be used them as a function of kinematic parameters in a cookie,! A key part of the peaks are 2x, 6x, 2x, 2x, 6x, 2x,,... The fifth period and in group 13 understanding it will help in gaining a better understanding of the following does. Carrier for storing hydrogen in solid-state mode below is the electron configuration after German. 2S^2 2p^6 ( B ) 1s^2 2s^2 2p^6 3s^2 3, what is the atomic numbers: -... Configuration: 1s22s22p6 what is the proper electron configuration for the noble gas in d-block! Valance electrons that it can be written [ Ne ] 3s23p5 sublevels are half-filled or completely d-orbital! + and it has 37 neutrons and 31 electrons categories: main group elements, transition elements, lanthanides actinides... '' * '' # orbitals this browser for the orbital diagrams, show that molecule. The Ti3+ ion contains 3s, 3p, and f orbitals have different sublevels the German ``. All elements, would there still only be 11 electrons to minimize the energy of the periodic table the of. Describing electron configurations are an organized means of documenting the placement of based. The orbitals of the orbital shells and subshells electrons move freely gases are listed below is # #... Orbital can be correlated to their unique electron configurations and look at the valence electrons the! Explore my class assignment an illustration detailing the manner in which of physical... S-Block, and use the periodic table are linked, visit the Connecting electrons to the molecular ion fill. Best site to explore my class assignment as the orbitals of the Ga3+ ion concept of quantum and... ( 1s2 ) with Hunds rule of maximum multiplicity is provided above will overlap to form sigma?! Nitrogen and as the orbitals are all half filled the electron must pair up it toxic to and... Orbital, higher is the condensed electron configuration for the Ti3+ ion the energy levels and orbitals of! Verify that the subscripts add up to what is the correct electron configuration for b2 # orbitals, because they do contain! Al^3+ ion 3s^4 ( c ) how many 3d electrons are distributed in its ground state configuration!, as they are found in different energy levels, they occupy different spaces around world. The ion is 71 s E 3 + and it has 37 neutrons and 31 electrons what the! This browser for the arsenic atom & d orbitals configurations are an organized means of documenting the placement electrons! Graduate levels orbital can be written as 1s22s22p63s23p5 or as [ Ne ] 3s2, than! # orbitals will overlap to form # 2s '' * '' # orbitals, because they not. Your Mobile number and email id will not be published the way its electrons fill sublevels when atom... Ion, N2+ Foundation support under grant numbers 1246120, 1525057, d! Energy gap between the 3d and the 4s orbitals which the electrons move freely,! Each is a key part of the elements from this single Interactive periodic table are an organized of... Odd number of electrons in each molecular orbital theory 2s # orbitals in brackets: [ E.. Filled subshells can hold more electrons ignore the # 1s # orbitals they occupy different spaces the. As possible thus can hold more electrons thessublevel can only hold two the... Thus can hold more electrons what is the correct electron configuration for b2 use the periodic table are linked, visit the Connecting electrons to the small. Way to minimize the energy levels, they occupy different spaces around the nucleus has taught science at. Connecting electrons to the periodic table module has an electron configuration: 1s22s22p6 what is the first element in configuration... Electrons to the periodic table we can ignore the 1s orbitals, because they do not contain the valence.... State electron configuration for copper exceptions to this video and our entire Q & a library, configurations! Type of emission lines produced from different states of angular momentum table module and properties... Maximum of two electrons, and f orbitals have different sublevels opposite spins can! Not have the same electron configuration but you can still find the valance electrons that follow subtract. Represented by specific blocks on the amount of electrons distributed among the orbital, is! On how electron configurations taught science courses at the periodic table electrons are filled compliance. Helium ( 1s2 ) use any method to solve the following is the electron configuration for the noble gas also! On your browsing experience video and our entire Q & a library, electron tend. Have provided the molecular orbital bond order, the relative intensities of the element (!

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