Q. Which of the following statements is not correct?
A) The complexes $\left\lbrack {NiCl}_{4} \right\rbrack^{2 -}\ and\ \left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}$ differ in the state of hybridisation of nickel.
B) The complexes $\left\lbrack {NiCl}_{4} \right\rbrack^{2 -}\ and\ \left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}$ differ in the magnetic properties.
C) The complexes $\left\lbrack {NiCl}_{4} \right\rbrack^{2 -}\ and\ \left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}$ differ in geometry.
D) The complexes $\left\lbrack {NiCl}_{4} \right\rbrack^{2 -}\ and\ \left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}$ differ in primary valencies of nickel.
Explanation
(d)
The primary valencies of Ni, in the complexes $\left\lbrack Ni\left( Cl_{4} \right) \right\rbrack^{2 -}$and $\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}$ is same i.e., (+II). Primary valencies are those valencies which a metal exhibits in the formation of its simple salt, these are non-directional. It is also referred as oxidation state of central metal atom.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.