Question
Question: Which of the following statements is/are correct?...
Which of the following statements is/are correct?
A
Ni(CO)4 _____ Tetrahedral, paramagnetic
B
Ni(CN)4 ]2– _____ Square planar, diamagnetic
C
Ni(dmg)2 _____ Square planar, diamagnetic
D
[NiCl4]2– _____ Tetrahedral, paramagnetic
Answer
Ni(CN)4 ]2– _____ Square planar, diamagnetic
Explanation
Solution
In complex nickel is in zero oxidation state. The CO is strong field ligand and therefore compels for the pairing of electrons. The hybridisation scheme is as shown in figure.
Ni0([Ar] 3d8 4s2)
[Ni(CO)4]
sp3 hybrid orbitals
Four pairs of electrons from four co.
It is tetrahedral and as all electrons are paired so diamagnetic.