Answer:
The configuration of ion\[({{M}^{2+}}):1{{s}^{2}}\,2{{s}^{2}}\underset{\downarrow
}{\mathop{\cdot
2{{p}^{6}}}}\,\underset{+\,2{{e}^{-}}}{\mathop{\,3{{s}^{2}}}}\,3{{p}^{6}}\,3{{d}^{5}}.\]
The configuration of atom\[(M):1{{s}^{2}}\cdot
\,2{{s}^{2}}\underset{{}}{\mathop{2{{p}^{6}}}}\,\underset{{}}{\mathop{\,3{{s}^{2}}}}\,3{{p}^{6}}4{{s}^{2}}\,3{{d}^{5}}\]
The atom represents manganese (Mn) and
the dipositive ion is \[M{{n}^{2+}}\] ion.
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