Answer to Question #209760 in Atomic and Nuclear Physics for Estefania

Question

An electron in a Mercury atom is at the 'g' energy level and returns to the 'd' energy level. List how many possible photons may be emitted by the electron as it returns to the 'd' energy level. 

Answer 1

$d\to 2,$

$g\to 4,$

$x=2\cdot (4^2-2^2)=32.$