Rubidij[um]

Rubidij[um] (Rb)

hemijski element sa simbolom Rb i atomskim brojem 37
Atomic Number37
Atomic Weight85.4678
Maseni broj85
Group1
Period5
Blocks
Proton37 p+
Neutron48 n0
Elektron37 e-
Animated Bohrov model atoma of Rb (Rubidij[um])

Physical Property

Atomski Radijus
235 pm
Molarni volumen
covalent radius
210 pm
Metallic Radius
216 pm
Ionski radijus
152 pm
Crystal Radius
166 pm
Van der Waalsov radijus
303 pm
gustoća
1,53 g/cm³
Atomic Radii Of The Elements: Rubidij[um]0102030405060708090100110120130140150160170180190200210220230240250260270280290300310pmAtomski RadijusCovalent RadiusMetallic RadiusVan der Waalsov radijus

Chemical Property

energija
proton affinity
electron affinity
0,48592 eV/particle
ionization energy
4,177128 eV/particle
ionization energy of Rb (Rubidij[um])
Toplota isparavanja
75,8 kJ/mol
toplota topljenja
2,2 kJ/mol
standard enthalpy of formation
80,9 kJ/mol
Elektron
electron shell2, 8, 18, 8, 1
Bohrov model atoma: Rb (Rubidij[um])
Valentni elektron1
Lewis structure: Rb (Rubidij[um])
electron configuration[Kr] 5s1
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1
Enhanced Bohrov model atoma of Rb (Rubidij[um])
Orbital Diagram of Rb (Rubidij[um])
oksidacijsko stanje-1, 1
Elektronegativnost
0.82
Electrophilicity Index
0,7363448717297969 eV/particle
fundamental state of matter
agregatno stanjeSolid
gaseous state of matter
Boiling Point
961,15 K
Melting Point
312,45 K
critical pressure
16 MPa
Kritična temperatura
2.093,15 K
Trojna tačka
312,41 K
appearance
boja
Silver
appearancegrey white
Indeks prelamanja
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
Specifična električna provodljivost
8,3 MS/m
electrical resistivity
0,00000012 m Ω
Superprovodljivost
Magnetizam
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000026 m³/Kg
magnetic susceptibility (Molar)
0,000000000222 m³/mol
magnetic susceptibility (Volume)
0,00000398
magnetic ordering
Kirijeva tačka
Néel temperature
struktura
Crystal StructureBody Centered Cubic (BCC)
lattice constant
5,59 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
Tvrdoća
0,3 MPa
bulk modulus
2,5 GPa
shear modulus
Young's modulus
2,4 GPa
Poisson's ratio
Brzina zvuka
1.300 m/s
klasifikacija
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
Kvantni brojevi2S1/2
space group229 (Im_3m)

Isotopes of Rubidium

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

71Rb

Maseni broj71
broj neutrona34
relative atomic mass
70,965335 ± 0,000429 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin5/2
nuclear quadrupole moment
datum otkrića
parity-

decay modeintensity
p (proton emission)

72Rb

Maseni broj72
broj neutrona35
relative atomic mass
71,958851 ± 0,000537 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
103 ± 22 ns
spin1
nuclear quadrupole moment
datum otkrića2017
parity+

decay modeintensity
p (proton emission)

73Rb

Maseni broj73
broj neutrona36
relative atomic mass
72,950604506 ± 0,000043794 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin3/2
nuclear quadrupole moment
datum otkrića1996
parity-

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

74Rb

Maseni broj74
broj neutrona37
relative atomic mass
73,944265867 ± 0,000003249 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
64,78 ± 0,03 ms
spin0
nuclear quadrupole moment
0
datum otkrića1977
parity+

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

75Rb

Maseni broj75
broj neutrona38
relative atomic mass
74,9385732 ± 0,000001266 Da
g-factor
0,386 ± 0,00066666666666667
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
19 ± 1,2 s
spin3/2
nuclear quadrupole moment
0,81 ± 0,04
datum otkrića1975
parity-

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

76Rb

Maseni broj76
broj neutrona39
relative atomic mass
75,935073031 ± 0,000001006 Da
g-factor
-0,372552 ± 0,000011
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
36,5 ± 0,6 s
spin1
nuclear quadrupole moment
0,41 ± 0,09
datum otkrića1969
parity-

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

77Rb

Maseni broj77
broj neutrona40
relative atomic mass
76,930401599 ± 0,0000014 Da
g-factor
0,43622666666667 ± 0,000013333333333333
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3,78 ± 0,04 m
spin3/2
nuclear quadrupole moment
0,84 ± 0,17
datum otkrića1972
parity-

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

78Rb

Maseni broj78
broj neutrona41
relative atomic mass
77,928141866 ± 0,000003475 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
17,66 ± 0,03 m
spin0
nuclear quadrupole moment
0
datum otkrića1968
parity+

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

79Rb

Maseni broj79
broj neutrona42
relative atomic mass
78,923990095 ± 0,000002085 Da
g-factor
1,34292 ± 0,00048
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
22,9 ± 0,5 m
spin5/2
nuclear quadrupole moment
-0,12 ± 0,04
datum otkrića1957
parity+

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

80Rb

Maseni broj80
broj neutrona43
relative atomic mass
79,922516442 ± 0,000002 Da
g-factor
-0,0833 ± 0,0007
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
33,4 ± 0,7 s
spin1
nuclear quadrupole moment
0,42 ± 0,08
datum otkrića1961
parity+

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

81Rb

Maseni broj81
broj neutrona44
relative atomic mass
80,9189939 ± 0,000005265 Da
g-factor
1,3727333333333 ± 0,00093333333333333
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,572 ± 0,004 h
spin3/2
nuclear quadrupole moment
0,48 ± 0,1
datum otkrića1949
parity-

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

82Rb

Maseni broj82
broj neutrona45
relative atomic mass
81,918209023 ± 0,00000323 Da
g-factor
0,554403 ± 0,000016
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,2575 ± 0,0002 m
spin1
nuclear quadrupole moment
0,23 ± 0,1
datum otkrića1949
parity+

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

83Rb

Maseni broj83
broj neutrona46
relative atomic mass
82,915114181 ± 0,0000025 Da
g-factor
0,56984 ± 0,00032
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
86,2 ± 0,1 d
spin5/2
nuclear quadrupole moment
0,24 ± 0,05
datum otkrića1950
parity-

decay modeintensity
ϵ (electron capture)100%

84Rb

Maseni broj84
broj neutrona47
relative atomic mass
83,914375223 ± 0,000002355 Da
g-factor
-0,6625 ± 0,001
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
32,82 ± 0,07 d
spin2
nuclear quadrupole moment
-0,02 ± 0,04
datum otkrića1947
parity-

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

85Rb

Maseni broj85
broj neutrona48
relative atomic mass
84,91178973604 ± 0,00000000537 Da
g-factor
0,541224 ± 0,000016
natural abundance
72,17 ± 0,02
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin5/2
nuclear quadrupole moment
0,276 ± 0,001
datum otkrića1921
parity-

86Rb

Maseni broj86
broj neutrona49
relative atomic mass
85,911167443 ± 0,000000214 Da
g-factor
-0,8487 ± 0,0008
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
18,645 ± 0,008 d
spin2
nuclear quadrupole moment
0,23 ± 0,06
datum otkrića1941
parity-

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

87Rb

Maseni broj87
broj neutrona50
relative atomic mass
86,909180529 ± 0,000000006 Da
g-factor
1,8341933333333 ± 0,000053333333333333
natural abundance
27,83 ± 0,02
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
49,7 ± 0,3 Gy
spin3/2
nuclear quadrupole moment
0,1335 ± 0,0005
datum otkrića1921
parity-

decay modeintensity
β (β decay)100%

88Rb

Maseni broj88
broj neutrona51
relative atomic mass
87,91131559 ± 0,00000017 Da
g-factor
0,253755 ± 0,00001
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
17,78 ± 0,03 m
spin2
nuclear quadrupole moment
-0,01 ± 0,11
datum otkrića1939
parity-

decay modeintensity
β (β decay)100%

89Rb

Maseni broj89
broj neutrona52
relative atomic mass
88,912278136 ± 0,000005825 Da
g-factor
1,5887333333333 ± 0,00046666666666667
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
15,32 ± 0,1 m
spin3/2
nuclear quadrupole moment
0,17 ± 0,03
datum otkrića1940
parity-

decay modeintensity
β (β decay)100%

90Rb

Maseni broj90
broj neutrona53
relative atomic mass
89,914797557 ± 0,000006926 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
158 ± 5 s
spin0
nuclear quadrupole moment
0
datum otkrića1951
parity-

decay modeintensity
β (β decay)100%

91Rb

Maseni broj91
broj neutrona54
relative atomic mass
90,916537261 ± 0,000008375 Da
g-factor
1,4540666666667 ± 0,001
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
58,2 ± 0,3 s
spin3/2
nuclear quadrupole moment
0,19 ± 0,05
datum otkrića1951
parity-

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

92Rb

Maseni broj92
broj neutrona55
relative atomic mass
91,919728477 ± 0,000006573 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,48 ± 0,03 s
spin0
nuclear quadrupole moment
0
datum otkrića1960
parity-

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

93Rb

Maseni broj93
broj neutrona56
relative atomic mass
92,922039334 ± 0,000008406 Da
g-factor
0,56368 ± 0,00064
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
5,84 ± 0,02 s
spin5/2
nuclear quadrupole moment
0,21 ± 0,06
datum otkrića1960
parity-

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

94Rb

Maseni broj94
broj neutrona57
relative atomic mass
93,926394819 ± 0,000002177 Da
g-factor
0,49936666666667 ± 0,0006
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,702 ± 0,005 s
spin3
nuclear quadrupole moment
0,2 ± 0,07
datum otkrića1961
parity-

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

95Rb

Maseni broj95
broj neutrona58
relative atomic mass
94,929263849 ± 0,000021733 Da
g-factor
0,5332 ± 0,0012
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
377,7 ± 0,8 ms
spin5/2
nuclear quadrupole moment
0,26 ± 0,09
datum otkrića1967
parity-

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

96Rb

Maseni broj96
broj neutrona59
relative atomic mass
95,934133398 ± 0,000003599 Da
g-factor
0,73275 ± 0,00085
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
201,5 ± 0,9 ms
spin2
nuclear quadrupole moment
0,3 ± 0,09
datum otkrića1967
parity-

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

97Rb

Maseni broj97
broj neutrona60
relative atomic mass
96,937177117 ± 0,000002052 Da
g-factor
1,2266666666667 ± 0,0013333333333333
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
169,1 ± 0,6 ms
spin3/2
nuclear quadrupole moment
0,7
datum otkrića1969
parity+

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

98Rb

Maseni broj98
broj neutrona61
relative atomic mass
97,941632317 ± 0,000017265 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
115 ± 6 ms
spin0
nuclear quadrupole moment
0
datum otkrića1971
parity-

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

99Rb

Maseni broj99
broj neutrona62
relative atomic mass
98,94511919 ± 0,000004327 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
54 ± 4 ms
spin3/2
nuclear quadrupole moment
datum otkrića1971
parity+

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

100Rb

Maseni broj100
broj neutrona63
relative atomic mass
99,950331532 ± 0,000014089 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
51,3 ± 1,6 ms
spin4
nuclear quadrupole moment
datum otkrića1978
parity-

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

101Rb

Maseni broj101
broj neutrona64
relative atomic mass
100,954302 ± 0,000022 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
31,8 ± 3,3 ms
spin3/2
nuclear quadrupole moment
datum otkrića1992
parity+

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

102Rb

Maseni broj102
broj neutrona65
relative atomic mass
101,960008 ± 0,000089 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
37 ± 4 ms
spin4
nuclear quadrupole moment
datum otkrića1995
parity+

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

103Rb

Maseni broj103
broj neutrona66
relative atomic mass
102,964401 ± 0,000429 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
26 ± 11 ms
spin3/2
nuclear quadrupole moment
datum otkrića2010
parity+

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

104Rb

Maseni broj104
broj neutrona67
relative atomic mass
103,970531 ± 0,000537 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin
nuclear quadrupole moment
datum otkrića2018
parity

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

historija

otkrivač ili izumiteljR. Bunsen, G. Kirchoff
mjesto otkrićaGermany
datum otkrića1861
EtimologijaLatin: rubidus (deep red); the color its salts impart to flames.
pronunciationroo-BID-i-em (engleski)

izvor

Abundance
Abundance in Earth's crust
natural abundance (okean)
0,12 mg/L
natural abundance (ljudsko tijelo)
0,00046 %
natural abundance (Meteoroidi)
0,00032 %
natural abundance (Sunce)
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