Question

Question 16 3.5 pts For which of the following transitions in a hydrogen atom free of external fields does the electron energy increase? O Within the n=4,1 = 2 sublevel, the electron moves from me=-1 to m2= +1. O The electron moves from n = 2 to n= 1. O The electron moves from n = 3 to n = 5. O Within the n= 3 level, the electron moves from l = 2 to 6 =-2.

Answer 1

Energy of an electron in hy doogen atom, given by En = - 13.6 ev na is When m=4, if e goes from me=-) to me to the n remain same, there fore energy also semain same. ii) When n=2 to n=1, then Ex = E, - Ez = -13.6 + 13.6 (0) 4 = -10.2 ev decrease iii) When n=3 to n=s, Es = - 13.6 + 13.6 (5)2 (312 = + 0.967 en increase, hence third is correct du l=2 to 2=-2, nremain same therefore energy does not chanse. 7