The green coloured complex ion of nickel in its aqueous solution is

Question

The green coloured complex ion of nickel in its aqueous solution is (A) [ Ni ( en )3]2+ (B) [ Ni ( H 2 O )2( en )2]2+ (C) [ Ni ( H 2 O )4( en )]2+ (D) [ Ni ( H 2 O )6]2+

Tardigrade Admin · Accepted Answer

In complex [ Ni ( H 2 O )6]2+ the strong ligand is absent. Thus, electrons do not go for pairing and two unpaired e- are present in Ni 2+ complex. Hence, is a coloured complex.

Q. The green coloured complex ion of nickel in its aqueous solution is

$[N i (e n)_{3}]^{2 +}$

$[N i (H_{2} O)_{2} (e n)_{2}]^{2 +}$

$[N i (H_{2} O)_{4} (e n)]^{2 +}$

$[N i (H_{2} O)_{6}]^{2 +}$

In complex $[N i (H_{2} O)_{6}]^{2 +}$ the strong ligand is absent. Thus, electrons do not go for pairing and two unpaired $e^{-}$ are present in $N i^{2 +}$ complex. Hence, is a coloured complex.

Q. The green coloured complex ion of nickel in its aqueous solution is

[Ni(en)3​]2+

[Ni(H2​O)2​(en)2​]2+

[Ni(H2​O)4​(en)]2+

[Ni(H2​O)6​]2+

In complex [Ni(H2​O)6​]2+ the strong ligand is absent. Thus, electrons do not go for pairing and two unpaired e− are present in Ni2+ complex. Hence, is a coloured complex.

$[N i (e n)_{3}]^{2 +}$

$[N i (H_{2} O)_{2} (e n)_{2}]^{2 +}$

$[N i (H_{2} O)_{4} (e n)]^{2 +}$

$[N i (H_{2} O)_{6}]^{2 +}$

In complex $[N i (H_{2} O)_{6}]^{2 +}$ the strong ligand is absent. Thus, electrons do not go for pairing and two unpaired $e^{-}$ are present in $N i^{2 +}$ complex. Hence, is a coloured complex.