86
Rn
Radon
(222)
281832188
#86
Radon
noble gas· Gas·222 u
Radon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as a decay product of radium. Its most stable isotope, 222Rn, has a half-life of 3.8 days.
Read on Wikipedia
Identity
- Symbol
- Rn
- Atomic Number
- 86
- Atomic Mass
- 222 u
- Category
- noble gas
- Block
- p-block
- Period
- 6
- Group
- 18
- Appearance
- colorless gas, occasionally glows green or red in discharge tubes
- Year Discovered
- 1900 CE
- Discovered By
- Friedrich Ernst Dorn
- Named By
- radium
Electrons
- Configuration
- [Xe] 4f14 5d10 6s2 6p6
- Full Configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6
- Shells
- 2, 8, 18, 32, 18, 8
- Electronegativity
- 2.2
- Electron Affinity
- -68
- Oxidation States
- 0
- Ionization Energies
- 1037
Physical Properties
- State at
- Gas
- Melting Point
- 202
- Boiling Point
- 211.5
- Density
- 9.73
- Crystal Structure
- FCC
- Magnetic Ordering
- Diamagnetic
Mechanical
- Covalent Radius
- 150 pm
- Van der Waals
- 220 pm
Thermal & Electrical
- Thermal Conductivity
- 3.61 W/(m K) W/(m·K)
- Specific Heat
- 94 J/(kg K) J/(g·K)
- Heat of Vaporization
- 17 kJ/mol kJ/mol
- Heat of Fusion
- 3 kJ/mol kJ/mol
Abundance
- Universe
- 0
- Sun
- 0
- Meteorite
- 0
- Earth's Crust
- 0
- Ocean
- 6e-16 ppm
- Human Body
- 0