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Name
Atomic Number
Atomic Mass
Electron Configuration
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Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page
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
![[Bohr Model of Chlorine]](../bohr/b0017.gif) |
Number of Energy Levels: 3 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 7 |
Isotopes
| Isotope | Half Life |
| Cl-35 | Stable |
| Cl-36 | 301000.0 years |
| Cl-37 | Stable |
| Cl-38 | 37.2 minutes |
Facts
Date of Discovery: 1774
Discoverer: Carl Wilhelm Scheele
Name Origin: From the Greek word khlôros (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- Salt Institute
- Chlorine Chemistry Council
- Information about sodium chloride (table salt)
- Designed to promote understanding of chlorine chemistry
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