A) 5.63 BM
B) 4.19 BM
C) 3.9 BM
D) 1.73 BM
Correct Answer: D
Solution :
\[C{{u}^{2+}}:[Ar]\,3{{d}^{9}}\] Hence, \[C{{u}^{2+}}\]has one unpaired electron. \[\mu =\sqrt{n\,(n+2)}\] \[=\sqrt{1\,(1+2)}\] \[=\sqrt{3}\] \[=1.73\,BM\]
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