Question

answer me
please...
it will be marked as brainleast​

Answer 1

Answer:

a) let fe be x

cl = -1

x+ 2(-1) =0

x= 2

i.e fe =+2

b) 1 s2 2s2 2 p6 3s2 3 p6 4s2 3d4

c) 3d

hope it helps you.

thanks.