Definition of beta. 1  1 : the 2nd letter of the Greek alphabet â see alphabet table. 2  2 : beta particle. 3  3 : a measure of the risk potential of a stock or an investment portfolio expressed as a ratio of the stock's or portfolio's volatility to the volatility of the market as a whole.
Chlorine has been used as a chemical warfare agent. Sources: In nature, chlorine is only found in the combined state, most commonly with sodium as NaCl and in carnallite (KMgCl 3 â¢6H 2 O) and sylvite (KCl). The element is obtained from chlorides by electrolysis or via the action of oxidizing agents. Element Classification: Halogen. Density (g/cc): 1.56 (@ -33.6 Â°C).
Chlorofluorocarbons were typically found in refrigerants and aerosol propellants. They contain chlorine, fluorine, and carbon. These chemicals were used in almost every kind of aerosol can in the past. Every time hairspray, deodorant, bug spray, and even some medicines were used, chlorofluorocarbons were released into the atmosphere. These chemicals damage the ozone layer of our atmosphere.