Atomic Element Z = 54 • Noble Gas
Xenon (Xe) — Atomic Data, Electron Shells & Reactions
Xenon (symbol Xe, atomic number 54) has a standard atomic weight of 131.29 u and ground-state configuration [Kr] 4d10 5s2 5p6.
Atomic Number (Z)
54
IUPAC Symbol
Xe
Standard Atomic Weight
131.29 g/mol
Period / Group / Block
5 / 18 / p-block
Condensed Electron Config
[Kr] 4d10 5s2 5p6
Full Subshell Config
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6
Principal Shell Occupancy
[2, 8, 18, 18, 8]
Pauling Electronegativity
2.6
First Ionization Energy
1170 kJ/mol
Covalent Radius
140 pm
Melting Point
161.4 K (-111.75 °C)
Boiling Point
165.05 K (-108.10 °C)
Density
0.005887 g/cm³
Oxidation States
0, +2, +4, +6
Xe (Z=54) — Valence shell highlighted in vermilion