CHLORINE

ELEMENT NAME: CHLORINE ELEMENT SYMBOL: Cl ATMOIC NUMBER: 17 ATOMIC MASS: 35.4 NUMBER OF PROTONS: 17 NUMBER OF ELECTRONS: 17 NUMBER OF NEUTRONS: 18 ELECTRON CONFIGURATION: 3s2 3p5 ISOTOPES: CHLORINE 35 AND CHLORINE 37 ARE THE TWO ISOTOPES. THE MOST COMMON ISOTOPE IS CHLORINE 35 BECAUSE THE ATOMIC MASS IS 35.4, THEREFORE SINCE CHLORINE 35 IS CLOSER THAN CHLORINE 37, CHLORINE 35 IS THE MOST ABUNDANT AND COMMON ISOTOPE. PHYSICAL AND CHEMICAL PROPERTIES: CHLORINE IS A RESPIRATORY IRRITANT. THE GAS IRRITATES THE MUCOUS MEMBRANES AND THE LIQUID BURNS THE SKIN. IT IS FOUND COMMONLY AS NaCl SOLID OR SEAWATER. CHLORINE COMPOUNDS ARE USED FOR BLEACHING AND IS THE ONLY ACIDIC GAS WITH A PALE GREEN COLOR. IT IS ALSO USED TO PURIFY WATER. HISTORY: SIR HUMPHRY DAVY NAMED IT AFTER IDENTIFYING IT IN 1810. BUT IT WAS ACTUALLY FOUNDED BY K.W. SCHEELE IN 1774, BUT HE CONSIDERED IT TO BE A COMPOUND OF OXYGEN. THE GREEK WORD //[CHLOROS], A PALE, YELLOWISH GREEN COLOR. (WHICH OF COURSE THE GAS IS) USES: CHLORINE IS USED TO SANITIZE POOLS AND WASH CLOTHES. DECAYS INTO: UNKNOWN (NOT FOUND YET) BIBLIOGRAPHY: ASK.COM, DICTIONARY.COM, WIKIPEDIA.COM PICTURE OF THE ELEMENT: //