MCQ
If first orbit energy of $H{e^ + }$ is $-54.4 \,eV$, then the second orbit energy will be ............. $\mathrm{eV}$
- A$-54.4 $
- ✓$-13.6$
- C$-27.2$
- D$+ 27.2$
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$(I)\,C{H_3}O\mathop C\limits^ \oplus {H_2}$ is more stable than $C{H_3}\mathop C\limits^ \oplus {H_2}$
$(II)\,M{e_2}\mathop C\limits^ \oplus H$ is more stable than $C{H_3}C{H_2}\mathop C\limits^ \oplus {H_2}$
$(III)\,C{H_2} = CH - \mathop C\limits^ \oplus {H_2}$ is more stable than $C{H_3}C{H_2}\mathop C\limits^ \oplus {H_2}$
$(IV)\,C{H_2} = \mathop C\limits^ \oplus H$ is more stable than $C{H_3}\mathop C\limits^ \oplus {H_2}$