Question

what are the first 20 elements and their symbols?​

Answer 1

Answer:

Hydrogen -H

Helium -He

Lithium - Li

Beryllium-Be

Boron -B

Carbon-C

Nitrogen-N

Oxygen-O

Fluorine-F

Neon -Ne

Sodium-Na

Magnesium - Mg

Aluminum - Al

Silicon - Si

Phosphorus - P

Sulphur - S

Chlorine - Cl

Argon - Ar

Potassium-K

Calcium - Ca

I hope it helps you...