A) \[C{{u}^{+2}}\]
B) \[N{{i}^{+2}}\]
C) \[C{{o}^{+3}}\]
D) \[F{{e}^{+2}}\]
Correct Answer: A
Solution :
\[C{{u}^{+2}}\]S.No | Ion | Electronic configuration | No. of unpaired electrons |
(i) | \[C{{u}^{+2}}\] | \[{{d}^{9}}\] | 1 |
(ii) | \[N{{i}^{+2}}\] | \[{{d}^{8}}\] | 2 |
(iii) | \[C{{o}^{+2}}\] | \[{{d}^{7}}\] | 3 |
(iv) | \[F{{e}^{+2}}\] | \[{{d}^{6}}\] | 4 |
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