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19/09/2020 7:58 pm
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The correct electronic configuration and spin-only magnetic moment (BM) of Gd3+ (Z = 64), respectively, are:
(1) [Xe] 5f7 and 7.9
(2) [Xe] 5f7 and 8.9
(3) [Xe] 4f7 and 7.9
(4) [Xe] 4f7 and 8.9
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19/09/2020 7:59 pm
(3) [Xe] 4f7 and 7.9
Explanation:
64Gd = [Xe] 4f7 5d16s2
64Gd3+ = [Xe] 4f7
No. of unpaired electron = 7
μ = √n(n + 2)BM
= √63
= 7.93 Bm