____________________
-
H
____________________
-
Na
____________________
-
Rd
____________________
-
Fr
____________________
-
Be
____________________
-
Ca
____________________
-
Ba
____________________
-
Al
____________________
-
In
____________________
-
C
____________________
-
Ge
____________________
-
Pb
____________________
-
P
____________________
-
Sb
____________________
-
O
____________________
-
Se
____________________
-
Po
____________________
-
Cl
____________________
-
I
____________________
-
He
____________________
-
Ar
____________________
-
X
e