4 protons the number of proton has the same number of electron [which is the same as atomic number]
This is a bit long right now.
(n l m s) these are the numbers.
n=2, second orbital level.
l is the type of orbit: l=1 elongated, l=0 spherical
m=0, magnetic number: 0
s=spin, both have spin positive
You need still to round it up. Srry!
The smallest halogen atom is fluorine
Steal; Anion
This is the answer because phosphorous is very electronegative.
