The periodic table/Chlorine

Quick Facts
Name: Chlorine

Symbol: Cl

Date of Discovery: 1774

Discoverer: Carl Wilhelm Scheele

Atomic number: 17

Atomic Mass: 35.4527 amu

Classification: Group 17 (Halogen)

Protons: 17

Electrons: 17

Neutrons: 18

Color: Green

Crystal Structure: Orthorhombic

Melting Point: -100.98 °C

Boiling Point: -34.6 °C

Common uses Used in chlorinating water, production of acid (HCl), in cells and batteries.