36
83.798 u
Kr
Krypton
Noble Gas
Atomic Structure
Physical State
Group
18
Period
4
Block
p
Electron Configuration
[Ar] 3d¹⁰ 4s² 4p⁶
Physical Properties
Atomic Mass:
83.798 u
Electronegativity:
3
Atomic Radius:
202 pm
Ionization Energy:
14 eV
Density:
0.003733 g/cm³
Melting Point:
115.79 K
Boiling Point:
119.93 K
Historical Information
Discovered By:
William Ramsay
Year Discovered:
1898