Q.
The ionization energy of H is 13.6 electron volts (eV). The first and second ionization energies of He must be approximately.
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a
5 eV and 14 eV
b
5 eV and 54 eV
c
14 eV and 34 eV
d
24 eV and 54 eV
answer is D.
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Detailed Solution
IP1 value of the He should be more than H. So I1 of He should be 24 eV. Then 2nd IP of He should be 54 eV.
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