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If the binding energy of the electron in a hydrogen atom is 13.6 eY the energy required to remove the electron from
the first excited state of ${Li}^{+ +}$ is

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122.4 eV

30.6 eV

13.6 eV

3.4 eV

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detailed solution

Correct option is B

En=13.6n2×Z2 For first excited state n = 2 and for n)Li++,z=3⇒E=13.64×9=30.6 eV

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If the binding energy of the electron in a hydrogen atom is 13.6 eY the energy required to remove the electron fromthe first excited state of Li++ is

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If the binding energy of the electron in a hydrogen atom is 13.6 eY the energy required to remove the electron from
the first excited state of ${Li}^{+ +}$ is