Chlorine

Uses, Properties, & Facts

Oct 5, 2023 - 13:02
 0  14

chlorine

chlorinechlorine

chlorine (Cl), chemical element, the second lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. Chlorine is a toxic, corrosive, greenish yellow gas that is irritating to the eyes and to the respiratory system.

Element Properties
atomic number17
atomic weight35.446 to 35.457
melting point−103 °C (−153 °F)
boiling point−34 °C (−29 °F)
density (1 atm, 0 °C or 32 °F)3.214 g/litre (0.429 ounce/gallon)
oxidation states−1, +1, +3, +5, +7
electron configuration1s22s22p63s23p5

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