question_answer

When excess ammonia is added to \[CuS{{O}_{4}}\] solution the deep blue complex obtained is

A)  tetrahedral and paramagnetic

B)  tetrahedral and diamagnetic

C)  square planar and diamagnetic

D)  square planar and paramagnetic

E)  tetrahedral and ferromagnetic

Correct Answer: E

Solution :

                When excess of ammonia is added to\[CuS{{O}_{4}}\] solution a deep blue complex \[{{[Cu{{(N{{H}_{3}})}_{4}}]}^{2+}}\]is obtained, which is square planar and paramagnetic.