Write the ground-state electron configurations of the following ions: (a) Li1, (b) H2, (c) N32, (d) F2, (e) S22, (f) Al31, (g) Se22, (h) Br2, (i) Rb1, (j) Sr21, (k) Sn21, (l) Te22, (m) Ba21, (n) Pb21, (o) In31, (p) Tl1, (q) Tl31.
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