Chlorine, element No. 17 on the Periodic Table of Elements, has multiple applications. It is used to sterilize drinking water and to disinfect swimming pools, and it is used in the manufacturing ...

Predictive power. Gallium. Mendeleev left blank spaces in his original periodic table so that he could properly line up the known elements. Gallium, element 31, was his first gap to be filled, in ...

As clouds of chlorine drifted towards the Allies, panic set in. It was no good diving into a trench, as the dense chlorine was heavier than air and poured in. Of the 15,000 or more casualties ...

Chlorine is a common element in household cleaning and pesticide products. You’re probably most familiar with its use in pools to keep them free from bacteria and algae. It is naturally a gas ...

Get more information about chlorine by calling the regional poison control center at 1-800-222-1222. You can also reach the Public Response Hotline at 800-CDC-INFO or email them.

Sodium and chlorine, two highly reactive elements, combine to form the stable compound sodium chloride (ordinary table salt). Questions for Discussion Describe the electron configuration of sodium.