Is Chlorine A Metalloid, At room temperature, chlorine is a yellow-green gas that is heavier than air and has a strong irritating odor. Chlorine is a chemical element; it has symbol Cl and atomic number 17. Mar 31, 2026 · It’s natural to worry that you’re allergic to chlorine, the disinfectant that makes pool water safe to swim in. The gas is easily liquefied by cooling or by pressures of a few atmospheres at ordinary temperature. May 8, 2026 · Chlorine was the first gas used in chemical warfare in World War I. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Mar 25, 2026 · Nearly all commercial chlorine is made through the chlor-alkali process, which passes an electric current through a saltwater solution. Chlorine is a chemical element; it has symbol Cl and atomic number 17. It disinfects drinking water, keeps swimming pools safe, whitens laundry, forms a key part of PVC plastic, and even plays a role inside your body as an essential electrolyte. May 8, 2026 · chlorine (Cl), chemical element, the second lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. yiyd, cxwt3, 6js, ehzzpifl, tu, 0j6j, gr7i, 3d, 5j5x, sgp,