Period 3 element in 1810, who named it chlorine, from the Greek word χλωρος (chlōros), meaning "green-yellow." Chlorine is a component of various compounds, including table salt. It is the second most abundant halogen and 21st most abundant chemical element in Earth's crust. The great oxidizing potential of chlorine led it to its bleaching and disinfectant uses, as well as uses of an essential reagent in the chemical industry. As a common disinfectant, chlorine compounds are used in swimming pools to keep them clean and sanitary. In the upper atmosphere, chlorine-containing molecules such as chlorofluorocarbons have been implicated in ozone depletion. "Argon" (symbol
A Hazy Shade of Winter A Hazy Shade of Winter "A Hazy Shade of Winter" is a song by American music duo Simon & Garfunkel, released on October 22, 1966, initially as a stand-alone single, but was subsequently included on the duo's fourth studio album, "Bookends" (1968). It peaked at number 13 on the "Billboard" Hot 100. In 1987, for the "Less Than Zero" soundtrack, the Bangles recorded a cover version which peaked at number two on the "Billboard" Hot 100. The duo recorded "A Hazy Shade of Winter" during the sessions for "Parsley, Sage, Rosemary and Thyme" (1966), but the song was not included