1.

An energy of 24.6 eV is required to remove one of the electrons from a neutral helium atom. The energy (in eV) required to remove both the electrons from a neutral helium atom is                                       [IIT 1995]

A.            79.0                                          
B.            51.8
C.            49.2                                          
D.            38.2
Answer» B.            51.8


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