Question

A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom makes a transition from the upper level to the lower level?

Answer 1

Separation of two energy levels in an atom,
E = 2.3 eV
= 2.3 × 1.6 × 10⁻¹⁹
= 3.68 × 10⁻¹⁹ J

Let ν be the frequency of radiation emitted when the atom transits from the upper level to the lower level. We have the relation for energy as:

E = hv
Where,

Hence, the frequency of the radiation is 5.6 × 10¹⁴ Hz.