$Mn{O_2}\, + \,4NaCl\, + 4{H_2}S{O_4}\, \to $ $MnC{{l}_{2}}\,+\,4NaHS{{O}_{4}}\,+\,2{{H}_{2}}O\,+\underset{\begin{smallmatrix}
(Z) \\
pungent
\\
gas
\end{smallmatrix}}{\mathop{\,C{{l}_{2(g)}}}}\,$
(આપેલ : પરમાણુક્રમાંક $\mathrm{Sc}=21, \mathrm{Ti}_{\mathrm{i}}=22, \mathrm{~V}=23, \mathrm{Cr}=24, \mathrm{Mn}=25$ અને $\mathrm{Zn}=30$ )