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
Greek withdrawal from the eurozone Greek withdrawal from the eurozone A Greek withdrawal from the eurozone is a hypothetical scenario in which Greece withdraws from the Eurozone, likely to allow for the country to deal with its government-debt crisis. , no such withdrawal has occurred, nor is one in prospect. This conjecture has been referred to as "Grexit", a portmanteau combining the English words "Greek" and "exit", and which has been expressed in Greek as ελλέξοδος, (from "Ελλάς" + "έξοδος"). The term "Graccident" (accidental Grexit) was coined for the case that Greece exited the EU and the euro without intention. These terms first came into