The lower energy level contains more atoms than upper level under the conditions of ________________
A)isothermal packaging
B)population inversion
C)thermal equilibrium
D)pumping

Question

Quizplus · Accepted Answer

Under the condition of thermal equilibrium, the lower energy level contains more atoms than the upper level. This is because, according to the Boltzmann distribution, at thermal equilibrium, the population of atoms in energy levels follows an exponential decrease with increasing energy, meaning lower energy levels are more populated.

The Lower Energy Level Contains More Atoms Than Upper Level