Question

write 1 to 20 elements names and atomic weights

Answer 1

names of the elements atomic weights
Hydrogen. 1
Helium. 4
Lithium. 7
Beryllium. 9
Boron. 11
Carbon. 12
Nitrogen. 14
Oxygen. 16
Flourine. 19
Neon. 20
Sodium 23
Magnesium. 24
Aluminium. 27
Silicon. 28
Phosphorus. 31
Sulphur. 32
Chlorine. 35.5
Argon. 40
Potassium. 39
Calcium 40




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Answer 2

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Hydrogen. 1


Helium. 4


Lithium. 7


Beryllium. 9


Boron. 11


Carbon. 12


Nitrogen. 14


Oxygen. 16


Fluorine. 19


Neon. 20


Sodium 23


Magnesium. 24


Aluminium. 27


Silicon. 28


Phosphorus. 31


Sulphur. 32


Chlorine. 35.5


Argon. 40


Potassium. 39


Calcium 40



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