Q73 / 90 · JEE Main 2012 (19 May Online) · Physics

Ionisation energy of Li (Lithium) atom in ground state is $5.4 \mathrm{eV}$. Binding energy of an electron in $\mathrm{Li}^{+}$ion in ground state is $75.6 \mathrm{eV}$. Energy required to remove all three electrons of Lithium (Li) atom is

A
$81.0 \mathrm{eV}$
B
$135.4 \mathrm{eV}$
C
$203.4 \mathrm{eV}$
Correct answer
D
$156.6 \mathrm{eV}$

Hence, the correct answer is option: 'D'.

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