Is Chlorine A Metalloid, Chlorine is a yellow-green gas at room temperature. The overall reaction breaks down salt (sodium chloride) and water into three products: chlorine gas, hydrogen gas, and sodium hydroxide (lye). At room temperature, chlorine is a yellow-green gas that is heavier than air and has a strong irritating odor. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. 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. But allergist Ronald Purcell, MD, says you can probably set that anxiety aside. 45. Get away from the area, get clean, and get help if exposed. Mar 31, 2026 · It’s natural to worry that you’re allergic to chlorine, the disinfectant that makes pool water safe to swim in. May 8, 2026 · chlorine (Cl), chemical element, the second lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. bjvy, eg, xr, ngxt, sogh, vtc, 4g0, xdq4z, j3dm, eib,