كرىپتون

كرىپتون (Kr)

chemical element with symbol Kr and atomic number 36; rare gas
Atomic Number36
Atomic Weight83.798
mass number84
Group18
Period4
Blockp
پروتون36 p+
neutron48 n0
ئېلېكترون36 e-
Animated بورمودىلى of Kr (كرىپتون)

Physical Property

Atomic Radius
molar volume
covalent radius
117 pm
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
202 pm
density
0.003425 g/cm³

Chemical Property

ئېنېرگىيە
proton affinity
424.6 kJ/mol
electron affinity
ionization energy
13.9996049 eV/particle
ionization energy of Kr (كرىپتون)
enthalpy of vaporization
9.05 kJ/mol
enthalpy of fusion
standard enthalpy of formation
ئېلېكترون
ئېلېكترون قەۋەت2, 8, 18, 8
بورمودىلى: Kr (كرىپتون)
valence electron8
Lewis structure: Kr (كرىپتون)
electron configuration[Ar] 3d10 4s2 4p6
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6
Enhanced بورمودىلى of Kr (كرىپتون)
Orbital Diagram of Kr (كرىپتون)
oxidation number0, 1, 2
electronegativity
Electrophilicity Index
fundamental state of matter
phase of matterGas
gaseous state of matterMonoatomic
Boiling Point
119.735 K
Melting Point
115.78 K
critical pressure
5.525 MPa
critical temperature
209.48 K
triple point
115.775 K
73.53 kPa
appearance
color
Colorless
appearancecolorless gas, exhibiting a whitish glow in a high electric field
refractive index
1.000427
thermodynamic material property
Thermal Conductivity
0.0095 W/(m K)
thermal expansion
molar heat capacity
20.786 J/(mol K)
Specific Heat Capacity
0.248 J/(g⋅K)
heat capacity ratio5/3
electrical properties
type
electrical conductivity
electrical resistivity
superconductivity
magnetism
typediamagnetic
magnetic susceptibility (Mass)
-0.0000000044 m³/Kg
magnetic susceptibility (Molar)
-0.000000000369 m³/mol
magnetic susceptibility (Volume)
-0.0000000165
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal StructureFace Centered Cubic (FCC)
lattice constant
5.72 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
1,120 m/s
classification
CategoryNoble gases, Noble gases
CAS GroupVIII
IUPAC GroupVIIIA
Glawe Number4
Mendeleev Number115
Pettifor Number4
Geochemical Classvolatile
Goldschmidt classificationatmophile

other

Gas Basicity
402.4 kJ/mol
polarizability
16.78 ± 0.02 a₀
C6 Dispersion Coefficient
130 a₀
allotrope
Neutron cross section
25
Neutron Mass Absorption
0.013
quantum number1S0
space group225 (Fm_3m)

Isotopes of Krypton

Stable Isotopes4
Unstable Isotopes31
Natural Isotopes6
Isotopic Composition8456.99%8456.99%8617.28%8617.28%8211.59%8211.59%8311.50%8311.50%802.29%802.29%780.36%780.36%

67Kr

mass number67
neutron number31
relative atomic mass
66.983305 ± 0.000455 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
7.4 ± 2.9 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention2016
parity-

decay modeintensity
2p (2-proton emission)37%
β+ (β+ decay; β+ = ϵ + e+)

68Kr

mass number68
neutron number32
relative atomic mass
67.972489 ± 0.000537 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
21.6 ± 3.3 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention2016
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)90%
p (proton emission)

69Kr

mass number69
neutron number33
relative atomic mass
68.965496 ± 0.000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
27.9 ± 0.8 ms
spin5/2
nuclear quadrupole moment
time of discovery or invention1995
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)94%

70Kr

mass number70
neutron number34
relative atomic mass
69.955877 ± 0.000215 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
45 ± 0.14 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1995
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)1.3%

71Kr

mass number71
neutron number35
relative atomic mass
70.950265695 ± 0.000138238 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
98.8 ± 0.3 ms
spin5/2
nuclear quadrupole moment
time of discovery or invention1981
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)2.1%

72Kr

mass number72
neutron number36
relative atomic mass
71.942092406 ± 0.0000086 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
17.16 ± 0.18 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1973
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

73Kr

mass number73
neutron number37
relative atomic mass
72.939289193 ± 0.000007061 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
27.3 ± 1 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1972
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.25%

74Kr

mass number74
neutron number38
relative atomic mass
73.933084016 ± 0.000002161 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
11.5 ± 0.11 m
spin0
nuclear quadrupole moment
0
time of discovery or invention1960
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

75Kr

mass number75
neutron number39
relative atomic mass
74.930945744 ± 0.0000087 Da
g-factor
-0.2124 ± 0.0016
natural abundance
radioactivity☢️ radioactive element
half-life
4.6 ± 0.07 m
spin5/2
nuclear quadrupole moment
1.137 ± 0.013
time of discovery or invention1960
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

76Kr

mass number76
neutron number40
relative atomic mass
75.925910743 ± 0.000004308 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
14.8 ± 0.1 h
spin0
nuclear quadrupole moment
0
time of discovery or invention1954
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

77Kr

mass number77
neutron number41
relative atomic mass
76.924669999 ± 0.0000021 Da
g-factor
-0.2332 ± 0.0012
natural abundance
radioactivity☢️ radioactive element
half-life
72.6 ± 0.9 m
spin5/2
nuclear quadrupole moment
0.948 ± 0.01
time of discovery or invention1948
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

78Kr

mass number78
neutron number42
relative atomic mass
77.920366341 ± 0.000000329 Da
g-factor
0
natural abundance
0.355 ± 0.003
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention1920
parity+

decay modeintensity
+ (double β+ decay)

79Kr

mass number79
neutron number43
relative atomic mass
78.920082919 ± 0.000003736 Da
g-factor
1.072 ± 0.004
natural abundance
radioactivity☢️ radioactive element
half-life
35.04 ± 0.1 h
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1948
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

80Kr

mass number80
neutron number44
relative atomic mass
79.91637794 ± 0.000000745 Da
g-factor
0
natural abundance
2.286 ± 0.01
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
time of discovery or invention1920
parity+

81Kr

mass number81
neutron number45
relative atomic mass
80.916589703 ± 0.000001152 Da
g-factor
-0.25914285714286 ± 0.00057142857142857
natural abundance
radioactivity☢️ radioactive element
half-life
229 ± 11 ky
spin7/2
nuclear quadrupole moment
0.644 ± 0.004
time of discovery or invention1950
parity+

decay modeintensity
ϵ (electron capture)100%

82Kr

mass number82
neutron number46
relative atomic mass
81.91348115368 ± 0.00000000591 Da
g-factor
0
natural abundance
11.593 ± 0.031
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
time of discovery or invention1920
parity+

83Kr

mass number83
neutron number47
relative atomic mass
82.914126516 ± 0.000000009 Da
g-factor
-0.21571777777778 ± 0.00000066666666666667
natural abundance
11.5 ± 0.019
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin9/2
nuclear quadrupole moment
0.259 ± 0.001
time of discovery or invention1920
parity+

84Kr

mass number84
neutron number48
relative atomic mass
83.91149772708 ± 0.0000000041 Da
g-factor
0
natural abundance
56.987 ± 0.015
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
time of discovery or invention1920
parity+

85Kr

mass number85
neutron number49
relative atomic mass
84.91252726 ± 0.000002147 Da
g-factor
-0.22344444444444 ± 0.000088888888888889
natural abundance
radioactivity☢️ radioactive element
half-life
10.728 ± 0.007 y
spin9/2
nuclear quadrupole moment
0.443 ± 0.003
time of discovery or invention1940
parity+

decay modeintensity
β (β decay)100%

86Kr

mass number86
neutron number50
relative atomic mass
85.91061062468 ± 0.00000000399 Da
g-factor
0
natural abundance
17.279 ± 0.041
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention1920
parity+

decay modeintensity
(double β decay)

87Kr

mass number87
neutron number51
relative atomic mass
86.913354759 ± 0.000000264 Da
g-factor
-0.4088 ± 0.0008
natural abundance
radioactivity☢️ radioactive element
half-life
76.3 ± 0.5 m
spin5/2
nuclear quadrupole moment
-0.3 ± 0.003
time of discovery or invention1940
parity+

decay modeintensity
β (β decay)100%

88Kr

mass number88
neutron number52
relative atomic mass
87.914447879 ± 0.0000028 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
2.825 ± 0.019 h
spin0
nuclear quadrupole moment
0
time of discovery or invention1939
parity+

decay modeintensity
β (β decay)100%

89Kr

mass number89
neutron number53
relative atomic mass
88.917835449 ± 0.0000023 Da
g-factor
-0.22 ± 0.002
natural abundance
radioactivity☢️ radioactive element
half-life
3.15 ± 0.04 m
spin3/2
nuclear quadrupole moment
0.166 ± 0.002
time of discovery or invention1940
parity+

decay modeintensity
β (β decay)100%

90Kr

mass number90
neutron number54
relative atomic mass
89.919527929 ± 0.000002 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
32.32 ± 0.09 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1951
parity+

decay modeintensity
β (β decay)100%

91Kr

mass number91
neutron number55
relative atomic mass
90.923806309 ± 0.0000024 Da
g-factor
-0.2332 ± 0.0008
natural abundance
radioactivity☢️ radioactive element
half-life
8.57 ± 0.04 s
spin5/2
nuclear quadrupole moment
0.303 ± 0.006
time of discovery or invention1951
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

92Kr

mass number92
neutron number56
relative atomic mass
91.926173092 ± 0.0000029 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
1.84 ± 0.008 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1951
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.0332%

93Kr

mass number93
neutron number57
relative atomic mass
92.931147172 ± 0.0000027 Da
g-factor
-0.826 ± 0.004
natural abundance
radioactivity☢️ radioactive element
half-life
1.287 ± 0.01 s
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1951
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.95%

94Kr

mass number94
neutron number58
relative atomic mass
93.934140452 ± 0.000013 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
212 ± 4 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1972
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.11%

95Kr

mass number95
neutron number59
relative atomic mass
94.939710922 ± 0.00002 Da
g-factor
-0.82 ± 0.006
natural abundance
radioactivity☢️ radioactive element
half-life
114 ± 3 ms
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1994
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)2.87%
2n (2-neutron emission)

96Kr

mass number96
neutron number60
relative atomic mass
95.943014473 ± 0.000020695 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
80 ± 8 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1994
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)3.7%

97Kr

mass number97
neutron number61
relative atomic mass
96.949088782 ± 0.00014 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
62.2 ± 3.2 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention1997
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)6.7%
2n (2-neutron emission)

98Kr

mass number98
neutron number62
relative atomic mass
97.952635 ± 0.000322 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
42.8 ± 3.6 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1997
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)7%
2n (2-neutron emission)

99Kr

mass number99
neutron number63
relative atomic mass
98.958776 ± 0.000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
40 ± 11 ms
spin5/2
nuclear quadrupole moment
time of discovery or invention1997
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)11%
2n (2-neutron emission)

100Kr

mass number100
neutron number64
relative atomic mass
99.962995 ± 0.000429 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
12 ± 8 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1997
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

101Kr

mass number101
neutron number65
relative atomic mass
100.969318 ± 0.000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
time of discovery or invention2010
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)
Krypton discharge tube

تارىخ

discoverer or inventorSir William Ramsey, M.W. Travers
location of discoveryGreat Britain
time of discovery or invention1898
etymologyGreek: kryptos (hidden).
pronunciationKRIP-ton (ئىنگلىزچە)

source

Abundance
Abundance in Earth's crust
0.0001 mg/kg
natural abundance (ئوكيانىيە)
0.00021 mg/L
natural abundance (human body)
natural abundance (meteoroid)
natural abundance (قۇياش)
Abundance in Universe
0.000004 %

Nuclear Screening Constants

1s0.7684
2p3.953
2s9.602
3d15.3741
3p15.5658
3s14.9673
4p26.2308
4s24.6844