• question_answer 9) The energy levels for $_{Z}{{A}^{(+Z-1)}}$ can be given by A)  ${{E}_{n}}$ for ${{A}^{(+Z-)}}={{Z}^{2}}\times {{E}_{n}}$ for HB)  ${{E}_{n}}$ for ${{A}^{(+Z-1)}}=Z\times {{E}_{n}}$ for HC)  ${{E}_{n}}$ for ${{A}^{(+Z-1)}}=\frac{1}{{{Z}^{2}}}\times {{E}_{n}}$ for HD)  ${{E}_{n}}$ for ${{A}^{(+Z-1)}}=\frac{1}{Z}\times {{E}_{n}}$ for H

${{E}_{He+}}={{E}_{H}}\times {{2}^{2}};{{E}_{Li}}^{2+}={{E}_{H}}\times {{3}^{2}}.......$up to Z