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Chemistry Question on coordination compounds

The correct order of energy of absorption for the following metal complexes is A:[Ni(en)3]2+A :\left[ Ni ( en )_3\right]^{2+}, B:[Ni(NH3)6]2+ B :\left[ Ni \left( NH _3\right)_6\right]^{2+}, C:[Ni(H2O)6]2+C :\left[ Ni \left( H _2 O \right)_6\right]^{2+}

A

C<B<AC < B < A

B

B<C<AB < C < A

C

C<A<BC < A < B

D

A<C<BA < C < B

Answer

C<B<AC < B < A

Explanation

Solution

Stronger the ligand, larger the splitting & higher the energy of absorption.
(A)[Ni(en)3​]+2​>(B)[Ni(NH3​)6​]+2​>(C)[Ni(H2​O)6​]+2​