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Energy Levels

If the ionisa...

Question

If the ionisation potential of Helium atom is 24.6 V, the energy required to ionise it , will be

A

24.6 eV

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B

34.6 eV

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C

30.6 eV

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D

13.6 eV

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Solution

The correct option is A 24.6 eV
Ionisation energy, $E = e V$
$= 1.6 \times 10^{- 19} \times 24.6 J$
$= 24.6 e V$

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