On adding excess of $N{H_3}$ solution to $CuS{O_4}$ solution, the dark blue colour is due to
On adding excess of $N{H_3}$ solution to $CuS{O_4}$ solution, the dark blue colour is due to
- [AIIMS 1982]
- A
${\left[ {Cu{{(N{H_3})}_4}} \right]^{ + 2 }}$
- B
${\left[ {Cu{{(N{H_3})}_2}} \right]^{ + 2 }}$
- C
${\left[ {Cu(N{H_3})} \right]^ + }$
- D
None of the above
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