If the binding energy of the electron in a hydrogen atom is $13.6 \mathrm{eV}$, the energy required to…

If the binding energy of the electron in a hydrogen atom is $13.6 \mathrm{eV}$, the energy required to remove the electron from the first excited state of $\mathrm{Li}^{++}$is
  1. $30.6 \mathrm{eV}$
  2. $13.6 \mathrm{eV}$
  3. $3.4 \mathrm{eV}$
  4. $122.4 \mathrm{eV}$

Solution

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Asked in: JEE Main 2003

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