If you mean 4/6 then it is equivalent to 2/3
-2/2-2/2 = -2
The 6s sublevel can hold a maximum of 2 electrons.
(s + 6)(6s - 7)
13s - 2
76 and 1/2 of them.
Is done by (3/3) plus (3/3) = 2
4 6s = 4*6 = 24. As a fraction, this can be written as 24/1.
16
3 x (22)2 + 2 = 50
Ceseum, 55Cs, has just 1 '6s' electron: 2, 8, 18, 18, 8, 1 electrons in the 1st to 6st shell respectevely.
4/6 = 2/3