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!
Mostly the electrons will determine the reactivity
It would be 24 because they inherit half of there chromosomes from their dad and the other half from their mom<span />