| Chlorine |
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| Atomic Number - | 17 | Melting Point (°C,°F) - | -101.5 °C, -150.7 °F |
| Atomic Symbol - | Cl | Boiling Point (°C,°F) - | -34.04 °C, -29.27 °F |
| Atomic Mass - | 35.45 | Electron Configuration - | [Ne] 3s2 3p5 |
| Group - | 17 | Electrons Per Shell - | 2, 8, 7 |
| Period - | 3 | Protons - | 17 |
| Series - | Halogens | Neutrons - | 18 |
| Block - | p-block | | |
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Element Description - Chlorine (from the Greek language Chloros, meaning "pale green"), is the chemical element with atomic number 17 and symbol Cl. It is a halogen, found in the periodic table in group 17. As the chloride ion, which is part of common salt and other compounds, it is abundant in nature and necessary to most forms of life, including humans. As chlorine gas, it is greenish yellow, is two and one half times as heavy as air, has an intensely disagreeable suffocating odor, and is exceedingly poisonous. In its liquid and solid form it is a powerful oxidizing, bleaching, and disinfecting agent. |
Element Characteristics - The pure chemical element, has the physical form of a diatomic yellow-green gas, Cl2.
This element is a member of the salt-forming halogen series and is extracted from chlorides through oxidation and more commonly, by electrolysis. Chlorine is a greenish-yellow gas that combines readily with nearly all other elements. At 10°C one liter of water dissolves 3.10 liters of chlorine and at 30 °C only 1.77 liters. |
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