NEET Solved Paper 2016 Question 29
Question: Which of the following has longest C-O bond length? (Free C-O bond length in Co is $ 1.128\overset{o}{\mathop{A}}, $ ).
Note:- Since metal atom is carrying maximum -ve charge therefore it would show maximum synergic bonding as sa resultant C-O bond length would be maximum.
Options:
A) $ Ni{{(CO)}_4} $
B) $ {{[Co{{(CO)}_4}]}^{O-}} $
C) $ {{[Fe{{(CO)}_4}]}^{2-}} $
D) $ {{[Mn{{(CO)}_6}]}^{+}} $
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Answer:
Correct Answer: C
Solution:
- $ {{[Fe{{(CO)} _4}]}^{2-}} $