Question

Valency and Valence electrons with dot structure from 1 to 20 elements​

Answer 1

The Valency of First 20 Elements

Element Symbol Valency

Helium He 0

Lithium Li 1

Beryllium Be 2

Boron B 3

Answer 2

Answer:

1. Hydrogen[H]-valency- 1
2. Helium[He]-valency-0[noble gas]
3. Lithium[Li]-valency-1
4. Beryllium[Be]-valency-2
5. Boron[B]-valency-3
6. Carbon[C]-valency-4[it is a tetravalent element]
7. Nitrogen[N]-valency-3
8. Oxygen[O]-valency-2
9. Fluorine[F]-valency-1
10. Neon[Ne]-valency-0[noble gas]
11. Sodium[Na]-valency-1
12. Magnesium[Mg]-valency-2
13. Aluminium[Al]-valency-3
14. Silicon[Si]-valency-4[metalloid]/
15. semi conductorPhosphorus[P]-valency-3
16. Sulphur[S]-valency-2
17. Chlorine[Cl]-valency-1
18. Argon[Ar]-valency-0[noble gas]Potassium
19. [K]-valency-1
20. Calcium[Ca]-valency-2