Question

Examples of gases in the first 20 elements

Answer 1

Answer:

1 hydrogen

2 helium

3 lithium

4 beryllium

5 boron

6 carbon

7 nitrogen

8 oxygen

9 fluorine

10 neon

11 sodium

12 magnesium

13 aluminium

14 silicon

15 phosphorus

16 sulfur

17 chlorine

18 argon

19 potassium

20 calcium