A) \[{{d}^{5}}\] (in strong ligand field)
B) \[{{d}^{3}}\] (in weak as well as in strong fields)
C) \[{{d}^{4}}\](in weak ligand fields)
D) \[{{d}^{4}}\](in strong ligand fields)
Correct Answer: D
Solution :
| \[{{d}^{5}}\]strong ligand field |
 |
| \[{{d}^{5}}\] |
| \[\mu =\sqrt{n\left( n+2 \right)}=\sqrt{3}=1.73\operatorname{BM}\] |
| \[{{d}^{3}}\]in weak as well as in strong field |
 |
| \[{{d}^{3}}\] |
| \[\mu =\sqrt{3\left( 5 \right)}=\sqrt{15}=3.87\operatorname{BM}.\] |
| \[{{d}^{4}}\]In weak ligand field |
 |
| \[{{d}^{4}}\] |
| \[\mu =\sqrt{4\left( 8 \right)}=\sqrt{24}=4.89\operatorname{B}.M.\] |
| \[{{d}^{4}}\] In strong ligand field |
 |
| \[{{d}^{4}}\] |
| \[\mu \sqrt{2\left( 4 \right)}=\sqrt{8}=2.82\operatorname{B}.M.\] |
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