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| General
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| Name, Symbol, Number
| krypton, Kr, 36
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| Chemical series
| Noble gases
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| Group, Period, Block
| 18 (VIIIA), 4 , pThe p-block of the periodic table of elements consists of the last six groups. In the elemental form of the p-block elements, the highest energy electron occupies a p- orbital. The p-block contains all of the nonmetals and semimetals, as well as some of t
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| DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness
| 3.708 kg/m3Kilogram per cubic metre is the SI measure of density and is represented as kg/m³, where kg stands for kilogram and m³ stands for cubic metre. The density of water is about 1000 kg/m³, since a cubic metre of water weighs about a tonne. kg/m³" is sometimes (273 K), NA
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| AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of
| colorless
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| Atomic properties
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| Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot
| 83.798 amuThe atomic mass unit amu , unified atomic mass unit u , or dalton Da , is a small unit of mass used to express atomic masses and molecular masses. It is defined to be 1/12 of the mass of one atom of Carbon-12. Accordingly, :1 u 1/N gram 1/(1000 N) kg (whe
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| Atomic radiusAtomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in a atom that is at equilibrium and is measured in picometers or Angstroms. Atomic radii are called covalent radii (a reference to the types of bonds formed) whe (calc.)
| no data (88) pm
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| Covalent radius
| 110 pm
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| van der Waals radius
| 202 pm
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| Electron configuration
| [ Ar]3 d10 4 s2 4p6
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| e- 's per energy level
| 2, 8, 18, 8
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| Oxidation states ( Oxide)
| 0 (unknown)
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| Crystal structure
| cubic face centered
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| Physical properties
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| State of matter
| gas ( nonmagnetic)
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| Melting point
| 115.79 K (-251.25 ° F)
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| Boiling point
| 119.93 K (-153.22 °F)
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| Molar volume
| 27.99 ×10-6 m3/mol
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| Heat of vaporization
| 9 .029 kJ/mol
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| Heat of fusion
| 1 .638 kJ/mol
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| Vapor pressure
| NA
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| Speed of sound
| 1120 m/s at 293.15 K
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| Miscellaneous
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| Electronegativity
| 3.00 ( Pauling scale)
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| Specific heat capacity
| 248 J/(kg*K)
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| Electrical conductivity
| no data
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| Thermal conductivity
| 0.00949 W/(m*K)
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| 1st ionization potential
| 1350.8 kJ/mol
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| 2nd ionization potential
| 2350.4 kJ/mol
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| 3rd ionization potential
| 3565 kJ/mol
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| 4th ionization potential
| 5070 kJ/mol
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| 5th ionization potential
| 6240 kJ/mol
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| 6th ionization potential
| 7570 kJ/mol
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| 7th ionization potential
| 10710 kJ/mol
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| 8th ionization potential
| 12138 kJ/mol
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| Most stable isotopes
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| iso
| NA
| half-life
| DM
| DE M eV
| DP
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| 78Kr
| 0.35%
| Kr is stable with 42 neutrons
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| 80Kr
| 2.25%
| Kr is stable with 44 neutrons
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| 81Kr
| {syn.}
| 229000 y
| Epsilon
| 0.281
| 81Br
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| 82Kr
| 11.6%
| Kr is stable with 46 neutrons
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| 83Kr
| 11.5%
| Kr is stable with 47 neutrons
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| 84Kr
| 57%
| Kr is stable with 48 neutrons
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| 85Kr
| {syn.}
| 10.756 y
| Beta-
| 0.687
| 85Rb
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| 86Kr
| 17.3%
| Kr is stable with 50 neutrons
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| SI units & STP are used except where noted.
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