question_answer

Which of the following statements is not true?

A) \[{{[MnC{{l}_{4}}]}^{2-}}\] ion has tetrahedral geometry and paramagnetic.

B) \[{{[Mn{{(Cl)}_{6}}]}^{2-}}\] ion has octahedral geometry and paramagnetic.

C) \[{{[Cu{{(CN)}_{4}}]}^{3-}}\]- has square planar geometry and diamagnetic.

D) \[[Ni{{(P{{h}_{3}}P)}_{2}}B{{r}_{3}}]\] has trigonal bipyramidal geometry 2 is paramagnetic.

Correct Answer: C

Solution :

[c]

Metal atom/ion	Configuration	Geometry	Magnetic nature
\[Mn\]
\[{{[MnC{{l}_{4}}]}^{2-}}\]		Tetrahedral	Paramagnetic
\[{{[MnC{{l}_{6}}]}^{4-}}\]		Octahedral	Paramagnetic
\[{{[Cu{{(CN)}_{4}}]}^{3-}}\]		Tetrahedral	Diamagnetic
\[[Ni{{(P{{h}_{3}}P)}_{2}}B{{r}_{3}}]\] (Bulkier gp.)		Tetrahedral	Paramagnetic