# Calculate the energy required for the processThe ionization energy for the H atom in the ground state is 2.18 × 10–18 J atom–1

Given:

Ground State Energy = 2.18 × 10–18 J atom–1

The energy of hydrogen atom is given by the following equation:

En = -2n2me4Z2/n2h2

Where

m = mass of electrons

Z = atomic mass of atom

E = charge of electron

h = Planck’s constant

For the process mentioned in the question, energy required = En– E1

= 0 – [-2n2me4 / 12h2]

= 4 × 2n2me4/h2

But we know 2n2me4/h2 = 2.18 × 10-18J

= 4 × 2.18 × 10-18

= 8.72 × 10-18J

Therefore, the energy required for the process is 8.72 × 10-18J

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