Search SchoolNGR

Saturday, 14 March 2026
Register . Login

An electron in a hydrogen atom makes a transition from the ground level to the third ...

An electron in a hydrogen atom makes a transition from the ground level to the third level. If the energy at the ground level,calculate the energy at the third level.
[h = 6.6 x 10-34Js; f = 1015Hz]
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 1.41eV
  • B 1.71eV
  • C 1.61eV
  • D 1.51eV
Correct Answer: Option D
Explanation:
E = \(\frac{E_o}{n^2}\) = \(\frac{13.6}{3^2}\) = \(\frac{13.6eV}{9}\)
= 1.51eV

Share question on: