Question

write the name of the element between atomic number 5 to 15 .write their valency?​

Answer 1

Answer:

5 boron valency 3

6 carbon valency 4

7 nitrogen valency -3

8 oxygen valency -2

9 fluorine valency -1

10 neon valency 0

11 sodium valency 1

12 magnesium Valency 2

13 aluminum valency 3

14 silicon valency 4

15 phosphorus valency 3