MCQ
The energy required to release $ 1$ electron from $H{e^ + }$ is ............ $\mathrm{eV}$
- A$+ 54.4$
- ✓$-13.6$
- C$+ 27.2$
- DCannot be predicted
✓
Answer
Correct option: B.
$-13.6$
b
(b)$E = - \frac{{13.6}}{{{n^2}}}\,\,for\,\,H{e^ + }\,\,n = 1$
(b)$E = - \frac{{13.6}}{{{n^2}}}\,\,for\,\,H{e^ + }\,\,n = 1$
$E = - \frac{{13.6}}{{{1^2}}} = - 13.6\,eV$.
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