name 50 elements with their valency
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I only know 20 we elements they are :
1 Hydrogen. 0
2 Helium. 1
3 Lithium. 2
4 Beryllium. 3
5 Boron 4
6 Carbon. 0
7 Nitrogen. 1
8 Oxygen. 2
9 Fluorine. 3
10 Neon. 4
11 Sodium
12 Magnesium
13 Aluminum
14 Sulphur
15 Chlorine
16 S
17 Phosphorus
18 Argon
19 Potassium
20 Calcium
1 Hydrogen. 0
2 Helium. 1
3 Lithium. 2
4 Beryllium. 3
5 Boron 4
6 Carbon. 0
7 Nitrogen. 1
8 Oxygen. 2
9 Fluorine. 3
10 Neon. 4
11 Sodium
12 Magnesium
13 Aluminum
14 Sulphur
15 Chlorine
16 S
17 Phosphorus
18 Argon
19 Potassium
20 Calcium
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