MCQ
When ammonia is added to a cupric salt solution, the deep blue colour is observed it is due to the formation of
- A${\left[ {Cu{{\left( {OH} \right)}_4}} \right]^{2 - }}$
- ✓${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }}$
- C${\left[ {Cu{{\left( {{H_2}O} \right)}_2}{{\left( {N{H_3}} \right)}_2}} \right]^{2 + }}$
- D${\left[ {Cu{{\left( {{H_2}O} \right)}_4}} \right]^{2 + }}$