So the previous part of the question asks you to complete the electron configuration for an atom of Sulfur:
Easy enough: 1s2 2s2 2p6 3s2 3p4
It then asks how many full orbitals are in an atom of sulfur. So I know that an orbital holds up to a max of 2 electrons...so I thought the logical conclusion from the above configuration would be sulfur holding 8 full orbitals, but the mark scheme says 7....help! Don't understand that!
Thanks