Select the incorrect statement about metal carbonyl complex compounds :

Options

A. Metal-carbon bonds in metal carbonyls posses both `sigma and pi` character.
B. Due to synergic, bonding metal-carbon bond becomes weak.
C. Due to synergic bonding carbon-oxygen bond strength decreases.
D. In metal carbonyls the extent of synergic bonding will increase with increase in negative charge on central metal ion.

Answer

B