Chlorine
Made from the Greek word 'chloros', meaning greenish yellow
Physical facts
Melting point: -150.7 degrees Fahrenheit
Boiling point: -29.27 degrees Fahrenheit
Density: .002898
Abundance in the earths crust: .017%
State of element: gas
Chlorine is found combined with other elements mainly sodium in the form of common salt.
Description:
Protons- 17
Electrons- 17
Nuetrons- 18
Atomic number- 17
Atomic mass- 35
Symbol- Cl
Group number- 17
Period number- 3
Group- Halogen
Uses:
- used as a anti septic
- make drinking water safe to consume
- treat swimming pools
Facts:
1) due to its toxic properties, Chlorine was used in World War 1.
2) it is the second most abundant halogen, and the second most lightest halogen on Earth.
3) when isolated as a free element, it takes form of a greenish- yellow gas.
Discovered by: Carl Wilhelm Scheele
Discovered in: 1774