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\[
\mathrm{X}_{(\mathrm{g})} \longrightarrow \mathrm{X}_{(\mathrm{g})}^{+}+\mathrm{e}^{-}, \quad \Delta \mathrm{H}=+720 \mathrm{~kJ} \mathrm{~mol}^{-1}
\]
\( \mathrm{P} \)
Calculate the amount of energy required to convert
W
\( 110 \mathrm{mg} \) of ' \( \mathrm{X} \) ' atom in gaseous state into \( \mathrm{X}^{+} \)ion.
(Atomic wt. for \( \mathrm{X}=7 \mathrm{~g} / \mathrm{mol} \) )
(1) \( 10.4 \mathrm{~kJ} \)
(2) \( 12.3 \mathrm{~kJ} \)
(3) \( 11.3 \mathrm{~kJ} \)
(4) \( 14.5 \mathrm{~kJ} \)
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