17
35.45 u
Cl
Chlorine
Halogen
Atomic Structure
Physical State
Group
17
Period
3
Block
p
Electron Configuration
[Ne] 3s² 3p⁵
Physical Properties
Atomic Mass:
35.45 u
Electronegativity:
3.16
Atomic Radius:
175 pm
Ionization Energy:
12.968 eV
Density:
0.003214 g/cm³
Melting Point:
171.6 K
Boiling Point:
239.11 K
Historical Information
Discovered By:
Carl Wilhelm Scheele
Year Discovered:
1774