Which of the following compounds show colour due to $d-d$ transition?
$\mathrm{CuSO}_4 .5 \mathrm{H}_2 \mathrm{O}$
$\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$
$\mathrm{K}_2 \mathrm{CrO}_4$
$\mathrm{KMnO}_4$
$Zn$ and $Hg$ belong to the same group, they differ in many of their properties. The property that is shared by both is
The correct statement in respect of $d-$ block elements
Triple degenerate $d-$ orbitals are exactly half-filled in
A pink colored salt on dry heating becomes blue in colour. Salt may contain
The atomic radius of $Ag$ is closest to