Question

valency of 1 to 20 elements ​

Answer 1

Resposta:

1. Hydrogen (H) = 1

2. Helium (He) = 0

3. Lithium (Li) = 1

4. Beryllium (Be) = 2

5. Boron (B) = 3

6. Carbon (C) = 4

7. Nitrogen (N) = 3

8. Oxygen (O) = 2

9. Fluorime (F) = 1

10. Neon (Ne) = 0

11. Sodium (Na) = 1

12. Magnesium (Mg) = 2

13. Aluminium (AL) = 3

14. Silicon (Si) = 4

15. Phosphorus (P) = 3,5

16. Sulphur (S) = 2

17. Chlorine (CL) = 1

18. Argon (Ar) = 0

19. Potassium (K) = 1

20. Calcium (Ca) = 2

Explicação: