Chlorine

Statistics:

• Name: Chlorine
• Symbol: Cl
• Classification: Halogen
• Atomic Number: 17
• Atomic Mass: 35.453 g/mol
• Density: 2.95 g/cm³
• Melting: -34.6°C
• Boiling: -101°C
• Protons & Electrons:17
• Neutrons:18
• Discovered: 1774
• Discovered By: Scheele
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Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 7

Isotopes:

Isotope: Half-life

• ³⁵Cl: stable
• ³⁶Cl: 301000 years
• ³⁷Cl: stable
• ³⁸Cl: 37.24 minutes

Brief Summary

Chlorine is a Halogen with the symbol 'Cl' and contains 17 Protons & Electrons with 18 neutrons in the nucleus of the atom. Chlorine has an atomic mass of 35.453 g/mol and, at a temperature of 20°C, has a density of 2.95 g/cm³. It will melt at a temperature of -34.6°C and boil at -101°C.

Chlorine was discovered by Scheele in 1774 and is named 'Chlorine' Greek word "khlôros" meaing "green".

Some common usages for Chlorine: Purifying water and in bleaches.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Chlorine :: Cl :: 17 - Chemical Element. 22 Nov. 2008 <http://www.chemicalelement.com/element/chlorine.html>.