Will you swim again in the pool,after reading this.?

Next time you take a refreshing dip in a swimming pool, remember that its water contains an element ,the second lightest of the halogens .Chlorine, a yellowish green gas at room temperature. It is an extremely reactive element and a strong oxidising agent. The good effect is its value as a bacteria killer. Used in the right proportion in drinking water and swimming pools, it's a good thing. 

But in its gaseous form or  in larger quantities, it's toxic and can corrode skin. Its attributes are the product of its instability- it has just seven valence electrons. The United States is a leading producer of chlorine, despite its potential hazards. Chlorine starts its life as salt .The chlorine is extracted from salt. Manufactured paper, textiles, petroleum products, medicines, antiseptics, . insecticides, solvents, paints, and plastics all contain chlorine. Fifty million tons of chlorine are produced every year.