The energy required to ionize a hydrogen atom in the ground state is 13.6 eV. What is the energy required to ionize it from n = 3?
Q1. The energy required to ionize a hydrogen atom in the ground state is 13.6 eV. What is the energy required to ionize it from n = 3?
Answer: 1.51 eV
Explanation: The energy of the nth orbit is En = -13.6 / n² eV. For n = 3, E3 = -1.51 eV. Energy required to ionize is 0 - (-1.51) = 1.51 eV.