Sorry for the delay! My internet is a bit bad. P is the third sublevel. Each sublevel (the angular momentum quantum number), has its own number: s = 1, p =3, d = 5, f = 7 The number of electrons for each is: s-2 p-6 d-10 f-14 It's easier to just memorize these numbers, but the equation for determining the sublevel number is 2n (n = the principal quantum number). The principal quantum number is based on the period the element is in.
