Question

How much energy is required to remove an electron in the n = 2 state from a hydrogen
atom?

Answer 1

Answer:

Given:

For hydrogen atom the ground state energy is

E0= −13.6eV and Z = 1. The energy of electron in nth state is.

E ñ = E0 × Z² ÷ n²

E2 = —13.6 × ( 1)² ÷ (2)²

E2 =— 3.4 eV

Hence, the energy required to remove an electron from n=2 state in hydrogen is .

+3.4 eV.