English Essay, Paragraph, Speech on “Chlorine” for Kids and Students for Class 8, 9, 10, Class 12 and Graduation Examination

Chlorine

Chlorine is (at room temperature) a greenish-yellow gas that can be readily liquefied at 5170 Tarr or 6.8 atmospheres, at 20°C (68°F), and has a very disagreeable odor. Its element symbol is Cl, atomic number is 17, and atomic mass is 35.453. Chlorine’s melting point is —101° C or 149.8°F. The boiling point is -34.05°C or -29.29°F, at one atmosphere pressure. Chlorine is a member of the halogen group. Chlorine was discovered by Swedish scientist Karl Wilhelm in 1784, but he first thought it was a compound, rather than an element. In 1810, Sir Humphrey Davy named it Chlorine, from the Greek word meaning “greenish-yellow”.