first 20 periodic elements

what element has the periodic number of 1?

hydrogen

what element has the periodic number of 2?

helium

what element has the periodic number of 3?

lithium

what element has the periodic number of 4?

beryllium

what element has the periodic number of 5?

boron

what element has the periodic number of 6?

carbon

what element has the periodic number of 7?

nitrogen

what element has the periodic number of 8?

oxygen

what element has the periodic number of 9?

fluorine

what element has the periodic number of 10?

neon

what element has the periodic number of 11?

sodium

what element has the periodic number of 12?

magnesium

what element has the periodic number of 13?

aluminium

what element has the periodic number of 14?

silicon

what element has the periodic number of 15?

phosphorus

what element has the periodic number of 16?

sulfur

what element has the periodic number of 17?

chlorine

what element has the periodic number of 18?

argon

what element has the periodic number of 19?

potassium

what element has the periodic number of 20?

calcium

what is the symbol for hydrogen?

H

what is the symbol for helium?

He

what is the symbol for lithium?

Li

what is the symbol for beryllium?

Be

what is the symbol for boron?

B

what is the symbol for carbon?

C

what is the symbol for nitrogen?

N

what is the symbol for oxygen?

O

what is the symbol for fluorine?

F

what is the symbol for neon?

Ne

what is the symbol for sodium?

Na

what is the symbol for magnesium?

Mg

what is the symbol for aluminum?

Al

what is the symbol for silicon?

Si

what is the symbol for phosphorus?

P

what is the symbol for sulfur?

S

what is the symbol for chlorine?

Cl

what is the symbol for argon?

Ar

what is the symbol for potassium?

K

what is the symbol for calcium?

Ca