Rûbîdyûm

Rûbîdyûm (Rb)

chemical element with symbol Rb and atomic number 37
Atomic Number37
Atomic Weight85.4678
Hejmara baristeyî85
Group1
Period5
Blocks
Proton37 p+
Notron48 n0
Kareva37 e-
Animated Bohr model of Rb (Rûbîdyûm)

Physical Property

Atomic Radius
235 pm
molar volume
Covalent Radius
210 pm
Metallic Radius
216 pm
ionic radius
152 pm
Crystal Radius
166 pm
Van der Waals radius
303 pm
density
1,53 g/cm³
Atomic Radii Of The Elements: Rûbîdyûm0102030405060708090100110120130140150160170180190200210220230240250260270280290300310pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

wize
proton affinity
electron affinity
0,48592 eV/particle
ionization energy
4,177128 eV/particle
ionization energy of Rb (Rûbîdyûm)
enthalpy of vaporization
75,8 kJ/mol
enthalpy of fusion
2,2 kJ/mol
standard enthalpy of formation
80,9 kJ/mol
Kareva
electron shell2, 8, 18, 8, 1
Bohr model: Rb (Rûbîdyûm)
valence electron1
Lewis structure: Rb (Rûbîdyûm)
electron configuration[Kr] 5s1
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1
Enhanced Bohr model of Rb (Rûbîdyûm)
Orbital Diagram of Rb (Rûbîdyûm)
oxidation number-1, 1
electronegativity
0.82
Electrophilicity Index
0,7363448717297969 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
961,15 K
Melting Point
312,45 K
critical pressure
16 MPa
critical temperature
2.093,15 K
triple point
312,41 K
appearance
color
Silver
appearancegrey white
refractive index
thermodynamic material property
Thermal Conductivity
58,2 W/(m K)
thermal expansion
molar heat capacity
31,06 J/(mol K)
Specific Heat Capacity
0,363 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
8,3 MS/m
electrical resistivity
0,00000012 m Ω
superconductivity
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000026 m³/Kg
magnetic susceptibility (Molar)
0,000000000222 m³/mol
magnetic susceptibility (Volume)
0,00000398
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal StructureBody Centered Cubic (BCC)
lattice constant
5,59 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
0,3 MPa
bulk modulus
2,5 GPa
shear modulus
Young's modulus
2,4 GPa
Poisson's ratio
Leza dengê
1.300 m/s
classification
CategoryAlkali metals, Alkali metals
CAS GroupIA
IUPAC GroupIA
Glawe Number9
Mendeleev Number4
Pettifor Number9
Geochemical Classalkali metal
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
319,8 ± 0,3 a₀
C6 Dispersion Coefficient
4.769 a₀
allotrope
Neutron cross section
0,38
Neutron Mass Absorption
0,0003
quantum number2S1/2
space group229 (Im_3m)

Isotopes of Rubidium

Stable Isotopes1
Unstable Isotopes33
Natural Isotopes2
Isotopic Composition8572.17%8572.17%8727.83%8727.83%

71Rb

Hejmara baristeyî71
neutron number34
Giraniya atomê
70,965335 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity-

decay modeintensity
p (proton emission)

72Rb

Hejmara baristeyî72
neutron number35
Giraniya atomê
71,958851 ± 0,000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
103 ± 22 ns
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê2017
parity+

decay modeintensity
p (proton emission)

73Rb

Hejmara baristeyî73
neutron number36
Giraniya atomê
72,950604506 ± 0,000043794 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1996
parity-

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

74Rb

Hejmara baristeyî74
neutron number37
Giraniya atomê
73,944265867 ± 0,000003249 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
64,78 ± 0,03 ms
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1977
parity+

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

75Rb

Hejmara baristeyî75
neutron number38
Giraniya atomê
74,9385732 ± 0,000001266 Da
g-factor
0,386 ± 0,00066666666666667
natural abundance
radioactivity☢️ radioactive element
half-life
19 ± 1,2 s
spin3/2
nuclear quadrupole moment
0,81 ± 0,04
dema îcadkirinê yan keşfê1975
parity-

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

76Rb

Hejmara baristeyî76
neutron number39
Giraniya atomê
75,935073031 ± 0,000001006 Da
g-factor
-0,372552 ± 0,000011
natural abundance
radioactivity☢️ radioactive element
half-life
36,5 ± 0,6 s
spin1
nuclear quadrupole moment
0,41 ± 0,09
dema îcadkirinê yan keşfê1969
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+α (β+-delayed α emission)3.8%

77Rb

Hejmara baristeyî77
neutron number40
Giraniya atomê
76,930401599 ± 0,0000014 Da
g-factor
0,43622666666667 ± 0,000013333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
3,78 ± 0,04 m
spin3/2
nuclear quadrupole moment
0,84 ± 0,17
dema îcadkirinê yan keşfê1972
parity-

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

78Rb

Hejmara baristeyî78
neutron number41
Giraniya atomê
77,928141866 ± 0,000003475 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
17,66 ± 0,03 m
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1968
parity+

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

79Rb

Hejmara baristeyî79
neutron number42
Giraniya atomê
78,923990095 ± 0,000002085 Da
g-factor
1,34292 ± 0,00048
natural abundance
radioactivity☢️ radioactive element
half-life
22,9 ± 0,5 m
spin5/2
nuclear quadrupole moment
-0,12 ± 0,04
dema îcadkirinê yan keşfê1957
parity+

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

80Rb

Hejmara baristeyî80
neutron number43
Giraniya atomê
79,922516442 ± 0,000002 Da
g-factor
-0,0833 ± 0,0007
natural abundance
radioactivity☢️ radioactive element
half-life
33,4 ± 0,7 s
spin1
nuclear quadrupole moment
0,42 ± 0,08
dema îcadkirinê yan keşfê1961
parity+

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

81Rb

Hejmara baristeyî81
neutron number44
Giraniya atomê
80,9189939 ± 0,000005265 Da
g-factor
1,3727333333333 ± 0,00093333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
4,572 ± 0,004 h
spin3/2
nuclear quadrupole moment
0,48 ± 0,1
dema îcadkirinê yan keşfê1949
parity-

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

82Rb

Hejmara baristeyî82
neutron number45
Giraniya atomê
81,918209023 ± 0,00000323 Da
g-factor
0,554403 ± 0,000016
natural abundance
radioactivity☢️ radioactive element
half-life
1,2575 ± 0,0002 m
spin1
nuclear quadrupole moment
0,23 ± 0,1
dema îcadkirinê yan keşfê1949
parity+

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

83Rb

Hejmara baristeyî83
neutron number46
Giraniya atomê
82,915114181 ± 0,0000025 Da
g-factor
0,56984 ± 0,00032
natural abundance
radioactivity☢️ radioactive element
half-life
86,2 ± 0,1 d
spin5/2
nuclear quadrupole moment
0,24 ± 0,05
dema îcadkirinê yan keşfê1950
parity-

decay modeintensity
ϵ (electron capture)100%

84Rb

Hejmara baristeyî84
neutron number47
Giraniya atomê
83,914375223 ± 0,000002355 Da
g-factor
-0,6625 ± 0,001
natural abundance
radioactivity☢️ radioactive element
half-life
32,82 ± 0,07 d
spin2
nuclear quadrupole moment
-0,02 ± 0,04
dema îcadkirinê yan keşfê1947
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)96.1%
β (β decay)3.9%

85Rb

Hejmara baristeyî85
neutron number48
Giraniya atomê
84,91178973604 ± 0,00000000537 Da
g-factor
0,541224 ± 0,000016
natural abundance
72,17 ± 0,02
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin5/2
nuclear quadrupole moment
0,276 ± 0,001
dema îcadkirinê yan keşfê1921
parity-

86Rb

Hejmara baristeyî86
neutron number49
Giraniya atomê
85,911167443 ± 0,000000214 Da
g-factor
-0,8487 ± 0,0008
natural abundance
radioactivity☢️ radioactive element
half-life
18,645 ± 0,008 d
spin2
nuclear quadrupole moment
0,23 ± 0,06
dema îcadkirinê yan keşfê1941
parity-

decay modeintensity
β (β decay)100%
ϵ (electron capture)0.0052%

87Rb

Hejmara baristeyî87
neutron number50
Giraniya atomê
86,909180529 ± 0,000000006 Da
g-factor
1,8341933333333 ± 0,000053333333333333
natural abundance
27,83 ± 0,02
radioactivity☢️ radioactive element
half-life
49,7 ± 0,3 Gy
spin3/2
nuclear quadrupole moment
0,1335 ± 0,0005
dema îcadkirinê yan keşfê1921
parity-

decay modeintensity
β (β decay)100%

88Rb

Hejmara baristeyî88
neutron number51
Giraniya atomê
87,91131559 ± 0,00000017 Da
g-factor
0,253755 ± 0,00001
natural abundance
radioactivity☢️ radioactive element
half-life
17,78 ± 0,03 m
spin2
nuclear quadrupole moment
-0,01 ± 0,11
dema îcadkirinê yan keşfê1939
parity-

decay modeintensity
β (β decay)100%

89Rb

Hejmara baristeyî89
neutron number52
Giraniya atomê
88,912278136 ± 0,000005825 Da
g-factor
1,5887333333333 ± 0,00046666666666667
natural abundance
radioactivity☢️ radioactive element
half-life
15,32 ± 0,1 m
spin3/2
nuclear quadrupole moment
0,17 ± 0,03
dema îcadkirinê yan keşfê1940
parity-

decay modeintensity
β (β decay)100%

90Rb

Hejmara baristeyî90
neutron number53
Giraniya atomê
89,914797557 ± 0,000006926 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
158 ± 5 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
β (β decay)100%

91Rb

Hejmara baristeyî91
neutron number54
Giraniya atomê
90,916537261 ± 0,000008375 Da
g-factor
1,4540666666667 ± 0,001
natural abundance
radioactivity☢️ radioactive element
half-life
58,2 ± 0,3 s
spin3/2
nuclear quadrupole moment
0,19 ± 0,05
dema îcadkirinê yan keşfê1951
parity-

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

92Rb

Hejmara baristeyî92
neutron number55
Giraniya atomê
91,919728477 ± 0,000006573 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
4,48 ± 0,03 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1960
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.0107%

93Rb

Hejmara baristeyî93
neutron number56
Giraniya atomê
92,922039334 ± 0,000008406 Da
g-factor
0,56368 ± 0,00064
natural abundance
radioactivity☢️ radioactive element
half-life
5,84 ± 0,02 s
spin5/2
nuclear quadrupole moment
0,21 ± 0,06
dema îcadkirinê yan keşfê1960
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.39%

94Rb

Hejmara baristeyî94
neutron number57
Giraniya atomê
93,926394819 ± 0,000002177 Da
g-factor
0,49936666666667 ± 0,0006
natural abundance
radioactivity☢️ radioactive element
half-life
2,702 ± 0,005 s
spin3
nuclear quadrupole moment
0,2 ± 0,07
dema îcadkirinê yan keşfê1961
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)10.3%

95Rb

Hejmara baristeyî95
neutron number58
Giraniya atomê
94,929263849 ± 0,000021733 Da
g-factor
0,5332 ± 0,0012
natural abundance
radioactivity☢️ radioactive element
half-life
377,7 ± 0,8 ms
spin5/2
nuclear quadrupole moment
0,26 ± 0,09
dema îcadkirinê yan keşfê1967
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)8.7%

96Rb

Hejmara baristeyî96
neutron number59
Giraniya atomê
95,934133398 ± 0,000003599 Da
g-factor
0,73275 ± 0,00085
natural abundance
radioactivity☢️ radioactive element
half-life
201,5 ± 0,9 ms
spin2
nuclear quadrupole moment
0,3 ± 0,09
dema îcadkirinê yan keşfê1967
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)13.7%
2n (2-neutron emission)

97Rb

Hejmara baristeyî97
neutron number60
Giraniya atomê
96,937177117 ± 0,000002052 Da
g-factor
1,2266666666667 ± 0,0013333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
169,1 ± 0,6 ms
spin3/2
nuclear quadrupole moment
0,7
dema îcadkirinê yan keşfê1969
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)25.5%
2n (2-neutron emission)

98Rb

Hejmara baristeyî98
neutron number61
Giraniya atomê
97,941632317 ± 0,000017265 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
115 ± 6 ms
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1971
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)14.3%
2n (2-neutron emission)0.054%

99Rb

Hejmara baristeyî99
neutron number62
Giraniya atomê
98,94511919 ± 0,000004327 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
54 ± 4 ms
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1971
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)17.3%
2n (2-neutron emission)

100Rb

Hejmara baristeyî100
neutron number63
Giraniya atomê
99,950331532 ± 0,000014089 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
51,3 ± 1,6 ms
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1978
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)5.6%
2n (2-neutron emission)0.15%

101Rb

Hejmara baristeyî101
neutron number64
Giraniya atomê
100,954302 ± 0,000022 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
31,8 ± 3,3 ms
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1992
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)28%
2n (2-neutron emission)

102Rb

Hejmara baristeyî102
neutron number65
Giraniya atomê
101,960008 ± 0,000089 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
37 ± 4 ms
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1995
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)65%
2n (2-neutron emission)

103Rb

Hejmara baristeyî103
neutron number66
Giraniya atomê
102,964401 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
26 ± 11 ms
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2010
parity+

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

104Rb

Hejmara baristeyî104
neutron number67
Giraniya atomê
103,970531 ± 0,000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê2018
parity

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)
RbMetal.JPG

dîrok

kaşîf an îcadkerR. Bunsen, G. Kirchoff
location of discoveryGermany
dema îcadkirinê yan keşfê1861
BêjenasîLatin: rubidus (deep red); the color its salts impart to flames.
pronunciationroo-BID-i-em (îngilîzî)

source

Abundance
Abundance in Earth's crust
natural abundance (Okyanûs)
0,12 mg/L
natural abundance (human body)
0,00046 %
natural abundance (meteoroid)
0,00032 %
natural abundance (Roj)
0,000003 %
Abundance in Universe
0,000001 %

Nuclear Screening Constants

1s0.7922
2p3.9612
2s9.8432
3d15.3208
3p15.6967
3s15.1573
4p26.1192
4s24.612
5s32.0155