Which one of the following has the maximum number of unpaired electrons
$M{g^{2 + }}$
$T{i^{3 + }}$
${V^{3 + }}$
$F{e^{2 + }}$
Which of the following order of atomic radius is not wrong
Assertion : Cuprous ion $(Cu^+)$ has unpaired electrons while cupric ion $(Cu^{2+})$ does not.
Reason : Cuprous ion $(Cu^+)$ is colourless whereas cupric ion $(Cu^{2+})$ is blue in the aqueous solution.
In the following transition elements, the lowest $M.P.$ and $B.P.$ is exhibited by
The Azimuthal quantum number for the valence electrons of $\mathrm{Ga}^{+}$ion is $.....$
(Atomic number of $\mathrm{Ga}=31$ )
Which of the following pair of ions may exhibit same colour