InterviewSolution
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InterviewSolution
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Comprehension # 1 Read the following rules and answer the questions at the end of it. Electrons in various suborbits of an filled in increasing order to their energies. Pairing of electrons in various orbitals of a suborbit takes places only after each orbital is half-filled. No two electrons in an atom can have the same set of quantum number. `C (Z=24),Mn^(+)(Z=25), Fe^(2+)(Z=26)` and `Co^(3+) (Z=27)` are isoelectronic each having 24 electrons. Thus,A. all have configuration as `[Ar]4s^(1)3d^(5)`B. Cr and `Mn^(+)` have configuration as `[Ar]4s^(1) 3d^(5)` while `Fe^(2+)` and `Co^(3+)` have configuration as `[Ar]3d^(5)`C. all have configurations as `[Ar]3d^(6)`D. all have configurations as `[Ar] 4s^(2)3d^(6)` |
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Answer» Correct Answer - B `Cr=1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5)4s^(1)` `Mn^(+)=1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5)4s^(1)` `Fe^(2+) = 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(6)` `Co^(3+)=1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5)` |
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