What are the n,l,ml,and ms values for the last electron in Be?
1s2 2s2 = 4B
So the last electron must be
n = 2, l = 0, ml = 0, ms = -1/2 (if you named the first one +1/2)
So the last electron must be
n = 2, l = 0, ml = 0, ms = -1/2 (if you named the first one +1/2)