Which of the following is an allowed transition?
a. l=1; ml=0 to l=1; ml=1
b. l=1; ml=0 to l=1; ml=1
c. l=1; ml=0 to l=2; ml=2
d. l=1; ml=0 to l=2; ml=0
Which of the following is a forbidden transition?
a. l=3; mi=2 to l=2; ml=2
b. l=3; mi=2 to l=2; ml=0
c. l=3; mi=2 to l=4; ml=3
d. l=3; mi=2 to l=2; ml=1
In the Zeeman effect, the energy levels of hydrogen are split by a magnetic field. Each state with a different value of has a different energy. The differences in energy between adjacent values of are all equal. The Zeeman effect is observed as a splitting in the spectral lines of hydrogen in the presence of a magnetic field. What is the greatest number of lines that a single spectral line can be split into by a magnetic field?
1 Answer

right answers are :
c. l=1; ml=0 to l=2; ml=2
d. l=3; mi=2 to l=2; ml=1