Question

what are the first 20element and their symbols​

Answer 1

H,He,Li,Be,b,c,n,o,f,ne,na,mg,al,si,p,s,cl,ar,k,ca

Answer 2

Answer:

Hydrogen H

Helium He

Lithium Li

Beryllium Be

Boron B

Carbon C

Nitrogen N

Oxygen O

Florine F

Neon Ne

Sodium Na

Magnesium Mg

Aluminum Al

Silicon Si

Phosphorus P

Sulphur S

Chlorine Cl

Argon Ar

Potassium K

Calcium Ca