Chlorine was discovered in 1774 by Carl Wilhelm Scheele but named in 1810 by Humphry Davy. It is a greenish-yellow element with an atomic radius of 100 pm that is used for water sanitation and purification as well as in many other industrial applications like petroleum products, medicines, and plastics.

1. By: Bruno Stromsdorfer

2.  The word Chlorine comes from the Greek:
Chloros that means Greenish-Yellow.
 Humphry Davy gaved its name in 1810.

3.  Chlorine was discovered by Carl Wilhelm
Scheele in 1774, but he thought chlorine
contained Oxygen then 36 years later
Humphy Davy named chlorine, he knew it was
an element.

4.  Total Configuration:
 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5
 Dot Diagram:
 Partial Configuration:
 [Ne]3s2 3p5

5.  Atomic Radius: 100 pm
 Ionization Energy:
 1st Ionization Enery:1251.1
 2nd Ionization Energy:2297.3
 3rd Ionization Energy: 3821.8
 Electron Affinity: 349
 Electronegativity: 3.16

6.  Chlorine is used for producing drinking
water also it is use for mostly sanitation
(cleaning) and desinfectants.
 Other uses of chlorine compounds include
petroleum
products, medicines, insecticides, solvents, p
aints and plastics.

7.  The cost of chlorine is:
 0.15$/100g
 Also it is very important, because without it
cleaning in houses will not be so good and
more viruses/bacterias can infect people
living in them.