Among the following complexes (K-P) |
\[{{K}_{3}}[Fe{{(CN)}_{6}}](\mathbf{K}),[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}(\mathbf{L}),\] |
\[N{{a}_{3}}[Co{{(oxalate)}_{3}}](\mathbf{M}),[Ni{{({{H}_{2}}O)}_{6}}]C{{l}_{2}}(\mathbf{N})\] |
\[{{K}_{2}}[Pt{{(CN)}_{4}}](O)\]and\[[Zb{{({{H}_{2}}O)}_{6}}]{{(N{{O}_{3}})}_{2}}(\mathbf{P})\] |
the diamagnetic complexes are |
A) K, L, M, N
B) K, M, O, P
C) L, M, O, P
D) L, M, N, O
Correct Answer: C
Solution :
Complex | No. of electrons in outer\[d\]orbital | No. of unpaired electron (s) |
\[{{[Fe{{(CN)}_{6}}]}^{3-}}\] | \[3{{d}^{5}}\] | 1(\[{{\operatorname{CN}}^{-}}\]causes pairing of electrons) |
\[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}\] | \[3{{d}^{6}}\] | 0 |
\[{{[Co{{(ox.)}_{3}}]}^{3-}}\] | \[3{{d}^{6}}\] | 0 |
\[{{[Ni{{({{H}_{2}}O)}_{6}}]}^{2+}}\] | \[3{{d}^{8}}\] | 2 |
\[{{[Pt{{(CN)}_{4}}]}^{2-}}\] | \[5{{d}^{8}}\] | 0(\[{{\operatorname{CN}}^{-}}\]causes pairing of electrons) |
\[{{[Zn{{({{H}_{2}}O)}_{6}}]}^{2+}}\] | \[3{{d}^{10}}\] | 0 |
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