$\mathrm{Cr}^{3+}:[\mathrm{Ar}] 3 \mathrm{~d}^{3} 4 \mathrm{~s}^{0}$
$\mathrm{Sc}^{+}:[\mathrm{Ar}] 3 \mathrm{~d}^{1} 4 \mathrm{~s}^{1}$
All are coloured and paramagnetic due to presence of unpaired $\mathrm{e}^{-}$
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$[Figure]$ $\longrightarrow \,\,A\,\xrightarrow{{{C_6}{H_5}N{H_2}}}B$
($1$) $W$ and $\mathbf{X}$ are, respectively
$[A]$ $O_3$ and $P_4 O_6$ $[B]$ $O_2$ and $P_4 O_6$ $[C]$ $O_2$ and $P_4 O_{10}$ $[D]$ $O_3$ and $P_4 O_{10}$
($2$) $Y$ and $Z$ are, respectively
$[A]$ $N_2 O_3$ and $\mathrm{H}_3 \mathrm{PO}_4$
$[B]$ $N_2 O_5$ and $\mathrm{HPO}_3$
$[C]$ $N_2 O_4$ and $HPO_3$
$[D]$ $N_2 O_4$ and $H_3 PO_3$
Give the answer of quetion ($1$) and ($2$)
