D-And F-Block Elements Ques 51
Question: On adding excess of $ NH_3 $ solution to $ CuSO_4 $ solution, the dark blue colour is due to
[CPMT 1990; AIIMS 1982; MP PMT 1989, 92; BHU 1996; JIPMER 1997]
Options:
A) $ {{[ Cu{{(NH_3)}_4} ]}^{++}} $
B) $ {{[ Cu{{(NH_3)}_2} ]}^{++}} $
C) $ {{[ Cu(NH_3) ]}^{+}} $
D) None of the above
Show Answer
Answer:
Correct Answer: A
Solution:
$ CuSO_4+4NH_3,\to ,{{[Cu{{(NH_3)}_4}]}^{++}}SO_4^{-,-} $
