54
Xe
Xenon
131.2936
2818188
#54

Xenon

noble gas· Gas·131.2936 u

Xenon is a chemical element with symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas, that occurs in the Earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.

Identity

Symbol
Xe
Atomic Number
54
Atomic Mass
131.2936 u
Category
noble gas
Block
p-block
Period
5
Group
18
Appearance
colorless gas, exhibiting a blue glow when placed in a high voltage electric field
Year Discovered
1898 CE
Discovered By
William Ramsay
Named By
stranger

Electrons

Configuration
[Kr] 4d10 5s2 5p6
Full Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6
Shells
2, 8, 18, 18, 8
Electronegativity
2.6
Electron Affinity
-77
Oxidation States
0
Ionization Energies
1170.4, 2046.4, 3099.4

Physical Properties

Xenon
State at
Gas
Melting Point
161.4
Boiling Point
165.051
Density
5.894
Crystal Structure
FCC
Magnetic Ordering
Diamagnetic

Mechanical

Atomic Radius
108 pm
Covalent Radius
140 pm
Van der Waals
216 pm

Thermal & Electrical

Thermal Conductivity
0.00569 W/(m K) W/(m·K)
Specific Heat
158 J/(kg K) J/(g·K)
Heat of Vaporization
12.6 kJ/mol kJ/mol
Heat of Fusion
2.27 kJ/mol kJ/mol

Abundance

Universe
10.0 ppb
Sun
0
Meteorite
0
Earth's Crust
30.0 ppt
Ocean
50.0 ppt
Human Body
0