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Energy required to ionise 2 mole of gase...

Energy required to ionise 2 mole of gaseous `He^(+)` ion present in its ground state is :

A

`54.4 eV`

B

`108.8 N_(A)eV`

C

`54.4 N_(A)eV`

D

`108.8eV`

Text Solution

Verified by Experts

The correct Answer is:
B
`I.E = +13.6 xx (Z^(2))/(n^(2))eV = 13.6 xx 4 = 54.4 eV`
for male `= 54.5 xx 2 xx N_(a)eV = 108.8 N_(A)eV`
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