Question

how to find valency of 20 elements ​

Answer 1

Answer:

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.Neon (Ne)

10.Fluorine (F)