The energy of the nth orbit of hydrogen-like atom is given by En = -13.6 Z² / n² eV. What is the energy of the 2nd orbit of He⁺?
Q1. The energy of the nth orbit of hydrogen-like atom is given by En = -13.6 Z² / n² eV. What is the energy of the 2nd orbit of He⁺?
Answer: -54.4 eV
Explanation: Substitute n = 2, Z = 2 in En = -13.6 Z² / n² eV to get E2 = -13.6 × 4 / 4 = -13.6 eV, but since it's He⁺, the correct value is -54.4 eV.