54
131.29 u
Xe
Xenon
Noble Gas
Atomic Structure
Physical State
Group
18
Period
5
Block
p
Electron Configuration
[Kr] 4d¹⁰ 5s² 5p⁶
Physical Properties
Atomic Mass:
131.29 u
Electronegativity:
2.6
Atomic Radius:
216 pm
Ionization Energy:
12.13 eV
Density:
0.005887 g/cm³
Melting Point:
161.4 K
Boiling Point:
165.03 K
Historical Information
Discovered By:
William Ramsay
Year Discovered:
1898