Xenon (Xe) VS Radon (Rn)
A definitive side-by-side comparison of two essential element profiles.
VS
Main Differences
Xenon (Xe) is an element in the noble gases category with an atomic number of 54. Radon (Rn) is an element in the noble gases category with an atomic number of 86.
Radon (Rn) is 1.7x denser than Xenon (Xe). However, Radon (Rn) melts at a higher temperature than Xenon (Xe) (a difference of 40.6 Kelvin).
Where do the names come from?
Xe Xenon (Xe) Naming History
The name Xenon is derived from the Greek ''xenos'' meaning stranger.
Rn Radon (Rn) Naming History
The name Radon is derived from radium, as it was first detected as an emission from radium during radioactive decay.
Related Comparisons
Compare
Xenon (Xe)
Radon (Rn)
Category
Noble Gases
Noble Gases
Atomic Number
54
86
Symbol
Xe
Rn
Atomic Mass
131.293 u
[222] u
Group
18
18
Period
5
6
Block
p-block
p-block
Standard State (at 20°C)
gas
gas
Density
5.894 g/L g/cm³
9.73 g/L g/cm³
Melting Point (°C)
−111.75°C
−71°C
Melting Point (°F)
−169.15°F
−96°F
Melting Point (K)
161.4 K
202 K
Boiling Point (°C)
−108.099°C
−61.7°C
Boiling Point (°F)
−162.578°F
−79.1°F
Boiling Point (K)
165.03 K
211.3 K
Year Discovered:
1898
1900
CAS Number
7440-63-3
10043-92-2
Origin of Name:
The name is derived from the Greek ''xenos'' meaning stranger.
The name is derived from radium, as it was first detected as an emission from radium during radioactive decay.