Discovered By: Friedrich Ernst Dorn
Discovery year: 1900

The following table showing some properties of Radon(Rn):

Table Example
Atomic number 86
Group 18
Period 6
Block p
Electrons 86
Protons 86
Neutrons 136
Atomic weight (222)
Oxidation states 0, +2
Electrons per shell K2 L8 M18 N32 O18 P8


Table Example
Electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^14 5d^10 6p^6
Gas atomic multiplicities 1
Atomic radius 120 pm
Covalent radius 150 pm
Boiling point -61.7°C
Melting point -71°C
Phase Gas
Fusion heat 3 kJ.mol^-1
Vaporization heat 17 kJ.mol^-1
Specific heat 93.65 J.kg^-1.K^-1


Table Example
Color Colorless
Density 9.73 kg.m^-3
Molar volume 2.28*10^-2 m^3.mol^-1
Thermal conductivity 0.00361 W.m^-1.K^-1
Valence 6
Electron affinity 0 kJ.mol^-1
First ionization energy 1037 kJ.mol^-1
Radioactive Yes
Half life 3.3035*10^5 s
Lifetime 4.7659*10^5 s
Neutron cross section 0.7 barn
Decay mode Alpha emission (α-decay)