give the total number of electrons , the number of valence electrons, and the identity of the element with each electronic configuration a) 1s2s22p63s23p6, b)1s22s22p63s23p64s23d7, c)1s22s22p3, d)[Kr5s24d105p2 please help solve . thank you

Explanation:

a)element=argon

number of electrons=18

it's an inert gas,thus it is fully filled

b)element=cobalt

number of electrons=27

valence electron=1

c).element=nitrogen

number of electrons=7

valence electrons=3

d)element=stanium

number of electrons=50

valence electrons=2