A) \[{{\text{ }\!\![\!\!\text{ Ni(CN}{{\text{)}}_{\text{4}}}\text{ }\!\!]\!\!\text{ }}^{\text{2-}}}\]
B) \[{{\text{ }\!\![\!\!\text{ Cr(N}{{\text{H}}_{\text{3}}}{{\text{)}}_{6}}\text{ }\!\!]\!\!\text{ }}^{\text{3+}}}\]
C) \[{{\text{ }\!\![\!\!\text{ Fe(}{{\text{H}}_{2}}\text{O}{{\text{)}}_{6}}\text{ }\!\!]\!\!\text{ }}^{\text{2+}}}\]
D) \[{{\text{ }\!\![\!\!\text{ Ni(}{{\text{H}}_{2}}\text{O}{{\text{)}}_{6}}\text{ }\!\!]\!\!\text{ }}^{\text{2+}}}\]
Correct Answer: A
Solution :
Key Idea For the absorption of visible light, presence of unpaired d-electrons is the necessity. In \[{{[Ni{{(CN)}_{4}}]}^{2-}},Ni\] is present as \[N{{i}^{2+}}.\]You need to login to perform this action.
You will be redirected in
3 sec