Category
halogen
State at Room Temperature
solid
Electron Configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁵
Valence Electrons
7
Lewis Dot:•••••••
Electronegativity
2.2
Pauling scale
Oxidation States
-1+1+3+5+7
Melting Point
575 K
301.85°C
Boiling Point
610 K
336.85°C
Density
6.35
g/cm³
Position in Table
Group 17Period 6p-block
Discovery
Historical Information
Discovered byDale R. Corson, Kenneth Ross MacKenzie, Emilio Segrè
Year1940
Common Uses
Applications & Industries
Cancer treatment research, radioactive tracers
Related Elements
Same group or period
Related Calculators
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