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

After the removal of first electron remaining atom will be hydrogen-like atom.So energy required to remove second electron atomthe atom E=13.6×221=54.4 eV∴ Total energy required = 24.6+54.4=79 eV