Which of the following statements is true for Kα transition?
A
It is four let
B
It is triplet
C
It is doublet
D
It is singlet
Answer:
The correct option is C. It is doublet
Note
Kα is a transition from 2p→1s, and it is a doublet because the transition has slightly different energy for the two possible spin states of the 2p electron while makes the transition, relative to the spin of the vacant 1s orbital.