Question

Molecular mass of first 20 elements.​

Answer 1

Answer:

h 1

he4

li7

c 12

n 14

o 16

na23

mg24

al 27

p31

s32

k39

ca40

hope it helps.....

Answer 2

Answer:

1 Hydrogen 1

2 Helium         4

3 Lithium         7

4 Beryllium 9

5 Boron         10

6 Carbon         12

7 Nitrogen         14

8 Oxygen         16

9 Fluorine         19

10 Neon         20

11 Sodium         23

12 Magnesium 24

13 Aluminium 26

14 Silicon         28

15 Phosphorus 31

16 Sulfur         32

17 Chlorine         35

18 Argon         40

19 Potassium 39

20   calcium            40

Explanation: