Calculate The Energy Required For The Process            He+ (g) → He2+ (g) + e–    The Ionization Energy For The H Atom In The Ground State Is  2.18 × 10–18 J Atom–1.  

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Calculate the energy required for the process

           He+ (g) → He2+ (g) + e   

The ionization energy for the H atom in the ground state is

 2.18 × 10–18 J atom–1.  


Correct option is



For H-atom, I.E. = E – E1  




For the given process,  

Energy required = En – E1      








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