Jawabanmu

2014-08-31T20:33:22+07:00
3d8 ( 3d pngkt 8 )
n = 3
l = 2
pnjlsn s (l = 0 ) ; p (l = 1) ; d (l=2) ; f(l=3)
m=0
s= -1/2

x = [Ar] 4s2 3d8

nomor atom Ar= 18
jadi nomor atom x= 18+2+8= 28