What is chlorine normal phase,cost for,origin of name,who and what year was chlorine discovered?

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What is chlorine normal phase,cost for,origin of name,who and what year was chlorine discovered?
Chlorine is a gas at STP.





Chlorine comes from ancient greek word chloros, which means green.





Chlorine was discovered in 1774 by Swedish chemist Carl Wilhelm Scheele, who mistakenly thought it was an oxide. It was identified as element and named by Sir Humphry Davy in 1810.