All $Zn( +II)$ compounds are white because
$Zn^{2+}$ has a $d^{10}$ configuration and the $d-$ subshell is full
$Zn^{2+}$ shows $d-d$ transition
$Zn^{2+}$ has no electron in the $4s-$ subshell
$Zn$ is not a transition element
Which of the following has second ionisation potential less than expected
Which of the following is correct
Highest $(+7) $ oxidation state is shown by
Which one of the following has the maximum number of unpaired electrons
Which of the following has maximum first ionisation energy ?