Question

write 1 to 10 elements valencies​

Answer 1

Explanation:

1 .Hydrogen =+1

2. Helium = ---

3. Lithium =+1

4.Beryllium=+2

5.Boron =+3

6.Carbon=-4

7.Nitrogen=-3

8.Oxygen=-2

9.Fluorine=-1

10.Neon=---