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Question

If the ionization potential of hydrogen atom is 13.6 eV, then, find the ionization potential of He+ ion.

A
54.4eV
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B
+54.4eV
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C
13.6eV
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D
+13.6eV
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Solution

The correct option is B +54.4eV
ForHe+ion,E=Z2E1n2
ForHe+ion,E1=22×13.61
=54.4eV
EE1=0+54.4eV=+54.4eV
Ionization potential of He+ ion = +54.4eV

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