Calculate the energy required for the process The ionization energy for the H atom in the ground state is 2.18 ×10-18 J atom-1

Question 2.34: Calculate the energy required for the process 

The ionization energy for the H atom in the ground state is 2.18 ×10^-18 J atom^-1
Answer
Energy associated with hydrogen-like species is given by,

For ground state of hydrogen atom,