Storms in the Bay of Bengal account for seven of the 10 deadliest hurricanes, typhoons and cyclones in recorded history, as documented by Weather Underground. The casualty figures are notoriously difficult to pin down, but here is the list: Bhola cyclone, Bangladesh (East Pakistan), 1970.
Chlorine Basic Facts. Properties: Chlorine has a melting point of -100.98Â°C, boiling point of -34.6Â°C, density of 3.214 g/l, specific gravity of 1.56 (-33.6Â°C), with a valence of 1, 3, 5, or 7. Chlorine is a member of the halogen group of elements and directly combines with almost all of the other elements. Chlorine gas is a greenish yellow. Chlorine figures prominently in many organic chemistry reactions, particularly in substitutions with hydrogen.
Chlorine is a highly reactive gas. It is a naturally occurring element. The largest users of chlorine are companies that make ethylene dichloride and other chlorinated solvents, polyvinyl chloride (PVC) resins, chlorofluorocarbons, and propylene oxide. Paper companies use chlorine to bleach paper.