Coordination Compounds - Result Question 67
####74. Which statement is incorrect?
[2001]
(a) $[Ni(CO)_4]-$ Tetrahedral, paramagnetic
(b) $[Ni(CN)_4]^{2-}$ - Square planar, diamagnetic
(c) $[Ni(CO)_4]-$ Tetrahedral, diamagnetic
(d) $[NiCl_4]^{2-}$ - Tetrahedral, paramagnetic
Show Answer
Solution:
- (a) (CO) carbonyl group being a strong ligand paired all electrons present in $d$ orbital of Ni.
In $[Ni(CO)_4]$ complex, $Ni$ will have $3 d^{10}$ configuration. It has tetrahedral geometry but diamagnetic as there are no unpaired electrons.
