Question

Calculate the energy required for the process. 

He⁺_(g) → He²⁺_(g) + e^- 

The ionization energy for the H atom in its ground state is – 13.6 eV atom^-1 .

Answer 1

The ionization energy for the H atom in its ground state = -13.6 eV atom^-1 .

onization energy = (13.6z² / n²)eV 

Z = atomic number 

n = principal quantum number or shell number 

For He, n = 1, z = 2

IE = (-13.6 x 2²)/ 1² eV.