Question

Write the valency and atomicity of the following elements
1.Helium
3.neon
3.calcium
4.hydrogen
5.nitrogen
6.oxygen
7.chlorine
8.carbon
9 phosphorus
10. Sulphur​

Answer 1

Answer:

Velency. Atomicity

1. zero 1

2. zero. 1

3. Two. 1

4. one 2

5.two ,five. 2

6. -two 2

7. one. 2

8. four.

9. three ,five. 4

10. -two 8