Дополни схему.

\(^{20}_{20}Ca\,\,\underbrace{)}_{2}\,\underbrace{\),}{8}\underbrace{,)}{8},\underbrace{)}_{2},,,,,,,-, )     [ ]\(\vec{e} \longrightarrow{}\)  \(\left[ {}_{20}^{}{Ca}^{2+} \,\,\underset{2}{\rparen} \,\underset{8}{\rparen} \,\underset{8}{\rparen} \,\right]\)