Question

list and names of atomic number from one to twenty.

Answer 1

Hydrogen Helium Lithium beryllium Boron carbon Nitrogen Oxygen fluorine neon sodium magnesium aluminium Silicon Phosphorus Sulphur chlorine argon potassium calcium .....hope helps are frm 1 to 20...

Answer 2

HELLO MATE,
# HERE IS YOUR ANSWER,

Name. Symbol. Atomic no.

Hydrogen H 1
Helium He 2
Lithium. Li 3
Beryllium. Be 4
Boron. B 5
Carbon. C 6
Nitrogen. N 7
Oxygen. O 8
Fluorine. F 9
Neon. Ne 10
Sodium. Na 11
Magnesium. Mg 12
Aluminium. Al 13
Silicon. Si 14
Phosphorus . P 15
Sulphur. S 16
Chlorine. Cl 17
Argon. Ar 18
Potassium. K 19
Calcium. Ca 20

#HOPE IT HELPS U !!!!
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