01 About Chlorine
Used as a weapon in WWI. Also what makes swimming pools safe to swim in. The same element - just in wildly different concentrations and forms.
02 Physical Properties
State at room temperature๐จ Gas
Melting point-101.5 ยฐC
Boiling point-34 ยฐC
Density0.00321 g/cmยณ
Atomic mass35.453 u
Electron configuration2,8,7
Period / GroupPeriod 3, Group 17
BlockP-block
03 Discovery
Chlorine was discovered in 1774 by Scheele.