Co-Ordination Compounds Question 74
Question: Which one of the following complexes is an outer orbital complex
[AIEEE 2004]
Options:
A) $ {{[Co{{(NH_3)}_6}]}^{3+}} $
B) $ {{[Mn{{(CN)}_6}]}^{4-}} $
C) $ {{[Fe{{(CN)}_6}]}^{4-}} $
D) $ {{[Ni{{(NH_3)}_6}]}^{2+}} $ Atomic nos: $ Mn=25,,Fe=26,,Co=27,,Ni=28 $
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Answer:
Correct Answer: D
Solution:
| Complex ion | Hybridization of central atom |
|---|---|
| $ {{[Fe{{(CN)}_6}]}^{4-}} $ | $ d^{2}sp^{3} $ (inner) |
| $ {{[Mn{{(CN)}_6}]}^{4-}} $ | $ d^{2}sp^{3} $ (inner) |
| $ {{[Co{{(NH_3)}_6}]}^{3+}} $ | $ d^{2}sp^{3} $ (inner) |
| $ {{[Ni{{(NH_3)}_6}]}^{2+}} $ | $ sp^{3}d^{2} $ (outer) |
