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H
+1
He
0
Li
+1
Be
+2
B
+3
C
+-4
N
-3
O
-2
F
-1
Ne
0
Na
+1
Mg
+2
Al
+3
Si
+-4
P
-3
S
-2
Cl
-1
Ar
0
K
+1
Ca
+2
As
-3
Se
-2
Br
-1
Kr
0
Rb
+1
Zn
+2
Ag
+1
I
-1
Sr
+2
Ba
+2