Mariela Herrera

Name: Argon

Symbol: Ar

Atomic Number: 18

Atomic Mass: 40

Cost: $0.5 for 100g

Protons: 18

Neutrons: 22

Electrons: 18

Argon is a gas.

Argon was discovered by Sir William Ramsay

Argon belongs to the Noble Gases family.

Melting Point in degree celsius: -189.3

Boiling Point in degree celsius: -185.8

Basic Facts of Argon: It's used in light bulbs to protect the flament and to provide un-reactive atmosphere. It's also used to semi-conductor industry to provide an inert atmosphere for silicon and germanium crystal growth. Argon is used in medical lasers.