Question

names of all elements of periodic table with valency

Answer 1

atomic no. elements. symbol
1. hydrogen H
2. helium He
3. lithium. Li
4. beryllium. Be
5. boron. B
6. carbon C
7. nitrogen. N
8. oxygen. O
9. flourine. F
10. neon. Ne
11. sodium. Na
12. magnesium. Mg
13. aluminium. Al
14. silicon. Sl
15. sulphur. S
16. phosphorus. P
17. chlorine. Cl
18. Argon. Ar
19. potassium. K.
20. calcium. Ca