Chemistry, asked by neeharikamehta3108, 8 months ago

19th and 20th elements of the periodic table symbols and atomic mass

Answers

Answered by konalhimanshu922

0

Answer:

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Answered by sharav1706

0

Answer:

ELEMENT SYMBOL ATOMIC MASS

Explanation:

Hydrogen H 1

Helium He 4

Lithium Li 7

Berylium Be 9

Boron B 10.81

Carbon C 12

Nitrogen N 14

Oxygen O 16

Fluorine F 19

Neon Ne 20.18

Sodium Na 23

Magnesium Mg 25

Aluminium Al 27

Silicon Si 28

Phosphorus P 31

Sulphur S 32

Chlorine Cl 35.5

Argon Ar 39.95

Potassium Ka 39

Calcium Ca 40

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