Question

Name 1-20 elements with their atomic numbers and atomic mass​

Answer 1

HEY MATE!!! ☺☺

NAME SYMBOL atomic mass

no. no.

hydrogen H 1 1

helium He 2 4

lithium Li 3 7

berriliym Be 4 9

boron B 5 11

carbon C 6 12

nitrogen N 7 14

oxygen O 8 16

flourine F 9 19

neon Ne 10 20

sodium Na 11 23

magnesium Mg 12 24

allunimium Al 13 27

silicon Si 14 28

phosphorus P 15 31

sulphur S 16 32

chlorine Cl 17 35

argon Ar 18 40

potassium K 19 39

calcium Ca 20 40

HOPE IT HELPS☺☺

Answer 2

1 H Hydrogen 1.00797

2 He Helium 4.00260

3 Li Lithium 6.941

4 Be Beryllium. 9.01218

5 B Boron. 10.81

6 C Carbon 12.011

7 N Nitrogen 14.0067

8 O Oxygen 15.9994

9 F Fluorine 18.998403

10 Ne Neon 20.179

11 Na Sodium 22.98977

12 Mg Magnesium 24.305

13 Al Aluminum 26.98154

14 Si Silicon 28.0855

15 P Phosphorus 30.97376

16 S Sulphur 32.06

17 Cl Chlorine. 35.453

18 Ar Argon. 39.948

19 K Potassium 39.0983

20 Ca Calcium. 40.08