On adding excess of $N{H_3}$ solution to $CuS{O_4}$ solution, the dark blue colour is due to
${\left[ {Cu{{(N{H_3})}_4}} \right]^{ + 2 }}$
${\left[ {Cu{{(N{H_3})}_2}} \right]^{ + 2 }}$
${\left[ {Cu(N{H_3})} \right]^ + }$
None of the above
Which of the following pairs of elements might form an alloy
If spin only magnetic moment of $VCl_X$ is $1.73\,BM$ then correct formula is
Correct statement for $3d-$ series is
The magnetic moments of following,arranged in decreasing order will be :-
$(i)$ $Co^{3+}$ (Octahedral complex with a strong field ligand)
$(ii)$ $Co^{3+}$ (Octahedral complex with a weak field ligand like $F^-$ )
$(iii)$ $Co^{2+}$ (Tetrahedral complex)
$(iv)$ $Co^{2+}$ (Square planar complex)