Criptó

Criptó (Kr)

chemical element with symbol Kr and atomic number 36; rare gas
Atomic Number36
Atomic Weight83.798
Rhif màs84
Group18
Period4
Blockp
Proton36 p+
Niwtron48 n0
Electron36 e-
Animated Bohr model of Kr (Criptó)

Nodwedd Ffisegol

Atomic Radius
molar volume
covalent radius
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
density

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
ionization energy of Kr (Criptó)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
Electron
plisgyn yr electron2, 8, 18, 8
Bohr model: Kr (Criptó)
valence electron8
Lewis structure: Kr (Criptó)
trefn yr electronnau[Ar] 3d10 4s2 4p6
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6
Enhanced Bohr model of Kr (Criptó)
Orbital Diagram of Kr (Criptó)
Cyflwr ocsidiad0, 1, 2
Electronegatifedd
Electrophilicity Index
cyflwr sylfaenol mater
cyflwr materGas
gaseous state of matterMonoatomic
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
lliw
Colorless
appearancecolorless gas, exhibiting a whitish glow in a high electric field
Mynegrif plygiant
1.000427
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio5/3
electrical properties
type
dargludedd trydanol
Gwrthedd
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
strwythur
Crystal StructureFace Centered Cubic (FCC)
lattice constant
Lattice Anglesπ/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
CategoryNoble gases, Noble gases
CAS GroupVIII
IUPAC GroupVIIIA
Glawe Number4
Mendeleev Number115
Pettifor Number4
Geochemical Classvolatile
Goldschmidt classificationatmophile

other

Gas Basicity
polarizability
C6 Dispersion Coefficient
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

Rhif màs67
neutron number31
Relative Atomic Mass
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7.4 ± 2.9 ms
spin3/2
nuclear quadrupole moment
dyddiad darganfod2016
parity-

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

68Kr

Rhif màs68
neutron number32
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
21.6 ± 3.3 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod2016
parity+

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

69Kr

Rhif màs69
neutron number33
Relative Atomic Mass
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
27.9 ± 0.8 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1995
parity-

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

70Kr

Rhif màs70
neutron number34
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
45 ± 0.14 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1995
parity+

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

71Kr

Rhif màs71
neutron number35
Relative Atomic Mass
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
98.8 ± 0.3 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1981
parity

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

72Kr

Rhif màs72
neutron number36
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
17.16 ± 0.18 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1973
parity+

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

73Kr

Rhif màs73
neutron number37
Relative Atomic Mass
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
27.3 ± 1 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod1972
parity

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

74Kr

Rhif màs74
neutron number38
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
11.5 ± 0.11 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1960
parity+

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

75Kr

Rhif màs75
neutron number39
Relative Atomic Mass
g-factor
-0.2124 ± 0.0016
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.6 ± 0.07 m
spin5/2
nuclear quadrupole moment
1.137 ± 0.013
dyddiad darganfod1960
parity+

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

76Kr

Rhif màs76
neutron number40
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
14.8 ± 0.1 h
spin0
nuclear quadrupole moment
0
dyddiad darganfod1954
parity+

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

77Kr

Rhif màs77
neutron number41
Relative Atomic Mass
g-factor
-0.2332 ± 0.0012
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
72.6 ± 0.9 m
spin5/2
nuclear quadrupole moment
0.948 ± 0.01
dyddiad darganfod1948
parity+

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

78Kr

Rhif màs78
neutron number42
Relative Atomic Mass
g-factor
0
natural abundance
0.355 ± 0.003
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1920
parity+

decay modeintensity
+ (double β+ decay)

79Kr

Rhif màs79
neutron number43
Relative Atomic Mass
g-factor
1.072 ± 0.004
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
35.04 ± 0.1 h
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1948
parity-

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

80Kr

Rhif màs80
neutron number44
Relative Atomic Mass
g-factor
0
natural abundance
2.286 ± 0.01
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1920
parity+

81Kr

Rhif màs81
neutron number45
Relative Atomic Mass
g-factor
-0.25914285714286 ± 0.00057142857142857
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
229 ± 11 ky
spin7/2
nuclear quadrupole moment
0.644 ± 0.004
dyddiad darganfod1950
parity+

decay modeintensity
ϵ (electron capture)100%

82Kr

Rhif màs82
neutron number46
Relative Atomic Mass
g-factor
0
natural abundance
11.593 ± 0.031
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1920
parity+

83Kr

Rhif màs83
neutron number47
Relative Atomic Mass
g-factor
-0.21571777777778 ± 0.00000066666666666667
natural abundance
11.5 ± 0.019
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin9/2
nuclear quadrupole moment
0.259 ± 0.001
dyddiad darganfod1920
parity+

84Kr

Rhif màs84
neutron number48
Relative Atomic Mass
g-factor
0
natural abundance
56.987 ± 0.015
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1920
parity+

85Kr

Rhif màs85
neutron number49
Relative Atomic Mass
g-factor
-0.22344444444444 ± 0.000088888888888889
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
10.728 ± 0.007 y
spin9/2
nuclear quadrupole moment
0.443 ± 0.003
dyddiad darganfod1940
parity+

decay modeintensity
β (β decay)100%

86Kr

Rhif màs86
neutron number50
Relative Atomic Mass
g-factor
0
natural abundance
17.279 ± 0.041
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1920
parity+

decay modeintensity
(double β decay)

87Kr

Rhif màs87
neutron number51
Relative Atomic Mass
g-factor
-0.4088 ± 0.0008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
76.3 ± 0.5 m
spin5/2
nuclear quadrupole moment
-0.3 ± 0.003
dyddiad darganfod1940
parity+

decay modeintensity
β (β decay)100%

88Kr

Rhif màs88
neutron number52
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.825 ± 0.019 h
spin0
nuclear quadrupole moment
0
dyddiad darganfod1939
parity+

decay modeintensity
β (β decay)100%

89Kr

Rhif màs89
neutron number53
Relative Atomic Mass
g-factor
-0.22 ± 0.002
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.15 ± 0.04 m
spin3/2
nuclear quadrupole moment
0.166 ± 0.002
dyddiad darganfod1940
parity+

decay modeintensity
β (β decay)100%

90Kr

Rhif màs90
neutron number54
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
32.32 ± 0.09 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1951
parity+

decay modeintensity
β (β decay)100%

91Kr

Rhif màs91
neutron number55
Relative Atomic Mass
g-factor
-0.2332 ± 0.0008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.57 ± 0.04 s
spin5/2
nuclear quadrupole moment
0.303 ± 0.006
dyddiad darganfod1951
parity+

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

92Kr

Rhif màs92
neutron number56
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.84 ± 0.008 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1951
parity+

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

93Kr

Rhif màs93
neutron number57
Relative Atomic Mass
g-factor
-0.826 ± 0.004
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.287 ± 0.01 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1951
parity+

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

94Kr

Rhif màs94
neutron number58
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
212 ± 4 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1972
parity+

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

95Kr

Rhif màs95
neutron number59
Relative Atomic Mass
g-factor
-0.82 ± 0.006
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
114 ± 3 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1994
parity+

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

96Kr

Rhif màs96
neutron number60
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
80 ± 8 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1994
parity+

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

97Kr

Rhif màs97
neutron number61
Relative Atomic Mass
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
62.2 ± 3.2 ms
spin3/2
nuclear quadrupole moment
dyddiad darganfod1997
parity+

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

98Kr

Rhif màs98
neutron number62
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
42.8 ± 3.6 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1997
parity+

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

99Kr

Rhif màs99
neutron number63
Relative Atomic Mass
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
40 ± 11 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1997
parity-

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

100Kr

Rhif màs100
neutron number64
Relative Atomic Mass
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
12 ± 8 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1997
parity+

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

101Kr

Rhif màs101
neutron number65
Relative Atomic Mass
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5/2
nuclear quadrupole moment
dyddiad darganfod2010
parity+

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

hanes

darganfyddwr neu ddyfeisiwrSir William Ramsey, M.W. Travers
man darganfodGreat Britain
dyddiad darganfod1898
geirdarddiadGreek: kryptos (hidden).
ynganiadKRIP-ton (Saesneg)

source

Abundance
Abundance in Earth's crust
natural abundance (cefnfor)
natural abundance (corff dynol)
natural abundance (Awyrfaen)
natural abundance (Haul)
Abundance in Universe
0.000004 %

Nuclear Screening Constants

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