Chemical Elements.com – Chlorine (Cl)

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Basic Information

Name: Chlorine

Symbol: Cl

Atomic Number: 17

Atomic Mass: 35.4527 amu

Melting Point: -100.98 °C (172.17 K, -149.764 °F)

Boiling Point: -34.6 °C (238.55 K, -30.279997 °F)

Number of Protons/Electrons: 17

Number of Neutrons: 18

Classification: Halogen

Crystal Structure: Orthorhombic

Density @ 293 K: 3.214 g/cm³
Color: green

Atomic Structure

Number of Energy Levels: 3 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 7

Isotopes

Facts

Date of Discovery: 1774

Discoverer: Carl Wilhelm Scheele

Name Origin: From the Greek word khlros (green)

Uses: Water purification, bleaches

Obtained From: Salt

Related Links

Note: The external links below are not a part of this site and their content is not the responsibility of this site

1. Salt Institute

Information about sodium chloride (table salt)

Designed to promote understanding of chlorine chemistry

If you know of any other links for Chlorine, please let me know

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