The energy required to excite an electron from n = 1 to n = 2 in a hydrogen atom is?
Q1. The energy required to excite an electron from n = 1 to n = 2 in a hydrogen atom is?
Answer: 10.2 eV
Explanation: Energy difference between n = 1 and n = 2 is 10.2 eV; option B is for n = 1 to n = 3.