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01/10/2020 4:09 pm
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Which of the following does not have valence electron in 3d-subshell?
(a) Fe(III)
(b) Cr(I)
(c) Mn(II)
(d) P(0)
1 Answer
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01/10/2020 4:10 pm
(d) P(0)
Explanation:
Electronic configuration of Cr (I) is
1s2 2s2 2p6 3s2 3p6 3d5.
Electronic configuration of Fe(III) is
1s2 2s2 2p6 3s2 3p6 3d5.
Electronic configuration of Mn (II) is
1s2 2s2 2p6 3s2 3p6 3d5.
So, all these have valence electrons in 3dsubshell. So, option (d) is correct answer.