answer the first 20 elements and their symbols in chemistry
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Answer:
Hydrogen =H
Helium =He
Lithium=Li
Beryllium=Be
Carbon=C
Nitrogen=N
Oxygen=O
Fluorine=F
Neon=Ne
Sodium=Na
Magnesium=Mg
Aluminium=Al
Silicon=Si
Phosphorus=P
Chlorine=CI
Argon=Ar
Potassium =K
Calcium=Ca
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