
Nina Z. answered 12/09/19
M.S. Degree with 20+ years of Teaching Chemistry Experience
Quantum number n indicates the energy level, the possible values are: 1∼7
quantum number l indicates the sublevel, when l = 0, it's s sublevel, l= 1, it's p sublevel, l=2, it's d sublevel, and l = 2, it's d sublevel.
1) n= 2, l=1 it's 2p sublevel
2) n=2, l=0 it's 2s sublevel