Question

The sum of intensities of all thwe lines of a multiplet which arrise from the same initial sate is proportional
to
(A) J
(B) J + 1
(C) 2)
(D) 2 J + 1​

Answer 1

Answer:

The famous sum rule of Ornstein, Burger and Dorgelo4 states that the sum of the intensities of all lines in a multiplet that belong to the same lower or upper level is proportional to the statistical weight (gJ = 2J+1) of that level.

Explanation:

option d is the answer