## principal quantum number

Sophie Krylova 2J
Posts: 59
Joined: Fri Sep 29, 2017 7:06 am

### principal quantum number

If n=5, then is it the row of the periodic table or the actual shell? (bc for d and f orbitals the two would be different)

Curtis Tam 1J
Posts: 105
Joined: Thu Jul 13, 2017 3:00 am

### Re: principal quantum number

n denotes the energy of the shell so it would correlate to the period of the periodic table. d and f would be l values which which is not the same thing as the "nth" period. In the case of d, electrons will fill the orbitals lagging one period behind the s orbitals. For f, electrons will fill the orbitals lagging 2 behind the s orbitals. Hope this helps!

Emma Miltenberger 2I
Posts: 51
Joined: Thu Jul 27, 2017 3:00 am

### Re: principal quantum number

If n=5, it is the row of the periodic table and the actual shell for the s and p orbitals. However, it is not for d and f.