Question

what is the valance shell for the fist 20 elements ( please answer I will do anything , it's not VALANCY ! )​

Answer 1

Answer:

NUMBER/SYMBOL/ELEMENT/VALENCE

1. /H. /Hydrogen. /1, 0, -1.

2. /He. /Helium. /0.

3. /Li. /Lithium. /1, -1

4. /Be. /Beryllium. /2

5. /B. /Boron. /3, 2, 1

6. /C. /Carbon. /4, 3, 2, 1, -1, -2, -4

7. /N. /Nitrogen. /5, 4, 3, 2, 1, 0, -1, -2, -3

8. /O. /Oxygen. /2, 1, 0, -1, -2

9. /F. /Fluorine. /0, -1

10. /Ne. /Neon. /0

11. /Na. /Sodium. /1, -1

12. /Mg. /Magnesium. /2

13. /Al. /Aluminum. /3, 1

14. /Si. /Silicon. /4, 3, 2, 1, -1, -2, -4

15. /P. /Phosphorus. /5, 4, 3, 2, 1, 0, -1, -2, -3

16. /S. /Sulfur. /6, 5, 4, 3, 2, 1, 0, -1, -2

17. /Cl. /Chlorine. /6, 5, 4, 3, 2, 1, 0, -1, -2

18. /Ar. /Argon. /0

19. /K. /Potassium. /1, -1

20. /Ca. /Calcium. /2

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