List of first 20 elements with their valency .
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Answers
Explanation:
The Valency of First 20 Elements
Element Symbol Atomic Number Valency
Hydrogen H 1 1
Helium He 2 0
Lithium Li 3 1
Beryllium Be 4 2
Boron B 5 3
Carbon C 6 4
Nitrogen N 7 3
Oxygen O 8 2
Fluorine F 9 1
Neon Ne 10 0
Sodium Na 11 1
Magnesium Mg 12 2
Aluminum Al 13 3
Silicon Si 14 4
Phosphorus P 15 3
Sulphur S 16 2
Chlorine Cl 17 1
Argon Ar 18 0
Potassium K 19 1
Calcium Ca 20 2
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Answer:
Elements. Valency
1. Hydrogen. 1
2. Helium. 0
3. Lithium. 1
4. Beryllium. 2
5. Boron. 3
6. Carbon. 4
7. Nitrogen. 3
8. Oxygen. 2
9. Fluorine. 1
10. Neon. 0
11. Sodium. 1
12. Magnesium. 2
13. Aluminum. 3
14. Silicon. 4
15. Phosphorus. 3
16. Sulphur. 2
17. Chlorine. 1
18. Argon. 0
19. Potassium. 1
20. Calcium. 2
Explanation:
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