What is the chemical chlorine?

Answer 1

Chlorine is one of the chemical elements. Because it is so reactive it is seldom encountered in its pure state yet we all know it in common table salt and other compounds. Under normal conditions it is a pale yellow-green gas. For more information you might consider seeing its wikipedia page.

Answer 2

Chlorine is a chemical element with the symbol Cl and atomic number 17. It is a highly reactive, greenish-yellow gas with a sharp odor. Chlorine is commonly used in disinfectants, bleaches, and PVC plastics.