36
Kr
Krypton
83.7982
28188
#36
Krypton
noble gas· Gas·83.7982 u
Krypton (from Greek:κρυπτός kryptos "the hidden one") is a chemical element with symbol Kr and atomic number 36. It is a member of group 18 (noble gases) elements. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere, is isolated by fractionally distilling liquefied air, and is often used with other rare gases in fluorescent lamps.
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Identity
- Symbol
- Kr
- Atomic Number
- 36
- Atomic Mass
- 83.7982 u
- Category
- noble gas
- Block
- p-block
- Period
- 4
- Group
- 18
- Appearance
- colorless gas, exhibiting a whitish glow in a high electric field
- Year Discovered
- 1898 CE
- Discovered By
- William Ramsay
- Named By
- hiding
Electrons
- Configuration
- [Ar] 3d10 4s2 4p6
- Full Configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6
- Shells
- 2, 8, 18, 8
- Electronegativity
- 3
- Electron Affinity
- -96
- Oxidation States
- 0
- Ionization Energies
- 1350.8, 2350.4, 3565, 5070, 6240 … +25 more
Physical Properties
- State at
- Gas
- Melting Point
- 115.78
- Boiling Point
- 119.93
- Density
- 3.749
- Crystal Structure
- FCC
- Magnetic Ordering
- Diamagnetic
Mechanical
- Atomic Radius
- 88 pm
- Covalent Radius
- 116 pm
- Van der Waals
- 202 pm
Thermal & Electrical
- Thermal Conductivity
- 0.00943 W/(m K) W/(m·K)
- Specific Heat
- 248 J/(kg K) J/(g·K)
- Heat of Vaporization
- 9.08 kJ/mol kJ/mol
- Heat of Fusion
- 1.64 kJ/mol kJ/mol
Abundance
- Universe
- 40.0 ppb
- Sun
- 0
- Meteorite
- 0
- Earth's Crust
- 100 ppt
- Ocean
- 210 ppt
- Human Body
- 0