Rubidium (Rb)

grundstof med atomnummer 37

Atomnummer	37
Atommasse	85.4678
mass number	85

Gruppe	1
Periode	5
Blok	s

proton	37 p⁺
neutron	48 n⁰
elektron	37 e^-

Animated Bohrs atommodel of Rb (Rubidium)

Fysisk Egenskab

Atomradius	235 pm 240 pm
molar volume	55,9 cm³/mol
Kovalent Radius	210 pm 202 pm 225 pm 220 pm
Metallic Radius	216 pm 248 pm
Ionisk radius	152 pm 156 pm 161 pm 163 pm 166 pm 169 pm 172 pm 183 pm
Crystal Radius	166 pm 170 pm 175 pm 177 pm 180 pm 183 pm 186 pm 197 pm
Van der Waals-radius	290 pm 303 pm 325 pm 303 pm 411,4 pm
massefylde	1,53 g/cm³ 1.460 kg/m³

Kemisk Egenskab

energi

proton affinity
electron affinity	0,48592 eV/particle
ioniseringsenergi	4,177128 eV/particle 27,28954 eV/particle 39,247 eV/particle 52,2 eV/particle 68,4 eV/particle 82,9 eV/particle 98,67 eV/particle 132,8 eV/particle 150,63 eV/particle 277,12 eV/particle 313,1 eV/particle 356 eV/particle 400 eV/particle 443 eV/particle 502 eV/particle 550 eV/particle 601 eV/particle 654 eV/particle 706 eV/particle 857 eV/particle 905,3 eV/particle 958,9 eV/particle 1.024 eV/particle 1.080 eV/particle 1.125 eV/particle 1.242,5 eV/particle 1.294,567 eV/particle 3.133,3 eV/particle 3.281 eV/particle 3.442 eV/particle 3.600 eV/particle 3.815 eV/particle 3.988 eV/particle 4.214 eV/particle 4.356,865 eV/particle 18.305,883 eV/particle 18.965,51 eV/particle

Fordampningsvarme	75,8 kJ/mol
smeltevarme	2,2 kJ/mol
standard enthalpy of formation	80,9 kJ/mol
elektron

Elektronskal	2, 8, 18, 8, 1

Valenselektron	1 ⓘ

electron configuration	[Kr] 5s¹ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s¹

Oxidationstrin	-1, 1
Elektronegativitet	4,177 eV/particle 0.104686 0.82
Electrophilicity Index	0,7363448717297969 eV/particle
fundamental state of matter

stoffase	Fast stof
gaseous state of matter
Kogepunkt	961,15 K
Smeltepunkt	312,45 K
critical pressure	16 MPa
critical temperature	2.093,15 K
trippelpunkt	312,41 K
appearance
farve	Silver #ff1493 #702eb0 #702eb0
appearance	grey white
Brydningsindeks
materialeegenskab
Varmeledningsevne	58,2 W/(m K)
Termisk ekspansion
molar heat capacity	31,06 J/(mol K)
Varmefylde	0,363 J/(g⋅K)
Adiabateksponenten
electrical properties
type	Conductor
specifik ledningsevne	8,3 MS/m
Elektrisk resistivitet	0,00000012 Ω*m
superledning
Magnetisme
type	paramagnetic
magnetic susceptibility (Mass)	0,0000000026 m³/Kg
magnetic susceptibility (Molar)	0,000000000222 m³/mol
magnetic susceptibility (Volume)	0,00000398
magnetic ordering
Curietemperaturen
Néel temperature
struktur
Krystalstruktur	Rumcentreret Kubisk (BCC)
lattice constant	5,59 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
hårdhed	0,216 MPa 0,3 MPa
Kompressibilitetsmodul	2,5 GPa
Forskydningsmodul
E-modul	2,4 GPa
Poissons forhold
speed of sound	1.300 m/s
klassificering
Kategori	Alkalimetaller, Alkali metals
CAS Group	IA
IUPAC Group	IA
Glawe Number	9
Mendeleev Number	4
Pettifor Number	9
Geochemical Class	alkali metal
Goldschmidt classification	litophile

øvrige

Gas Basicity
polarizability	319,8 ± 0,3 a₀
C6 Dispersion Coefficient	4.769 a₀ 4.660 a₀
allotrope
Neutron cross section	0,38
Neutron Mass Absorption	0,0003
quantum number	2S1/2
rumgruppe	229 (Im_3m)

Isotopes of Rubidium

Stable Isotopes	1
Unstable Isotopes	33
Natural Isotopes	2

⁷¹Rb

mass number	71
neutron number	34
Relative Atomic Mass	70,965335 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	5/2
nuclear quadrupole moment
opdagelsesdato
Paritet	-

decay mode	Intensitet
p (proton emission)

⁷²Rb

mass number	72
neutron number	35
Relative Atomic Mass	71,958851 ± 0,000537 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	103 ± 22 ns
spin	1
nuclear quadrupole moment
opdagelsesdato	2017
Paritet	+

decay mode	Intensitet
p (proton emission)

⁷³Rb

mass number	73
neutron number	36
Relative Atomic Mass	72,950604506 ± 0,000043794 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1996
Paritet	-

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

⁷⁴Rb

mass number	74
neutron number	37
Relative Atomic Mass	73,944265867 ± 0,000003249 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	64,78 ± 0,03 ms
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1977
Paritet	+

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

⁷⁵Rb

mass number	75
neutron number	38
Relative Atomic Mass	74,9385732 ± 0,000001266 Da
g-factor	0,386 ± 0,00066666666666667
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	19 ± 1,2 s
spin	3/2
nuclear quadrupole moment	0,81 ± 0,04
opdagelsesdato	1975
Paritet	-

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁷⁶Rb

mass number	76
neutron number	39
Relative Atomic Mass	75,935073031 ± 0,000001006 Da
g-factor	-0,372552 ± 0,000011
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	36,5 ± 0,6 s
spin	1
nuclear quadrupole moment	0,41 ± 0,09
opdagelsesdato	1969
Paritet	-

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

⁷⁷Rb

mass number	77
neutron number	40
Relative Atomic Mass	76,930401599 ± 0,0000014 Da
g-factor	0,43622666666667 ± 0,000013333333333333
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	3,78 ± 0,04 m
spin	3/2
nuclear quadrupole moment	0,84 ± 0,17
opdagelsesdato	1972
Paritet	-

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁷⁸Rb

mass number	78
neutron number	41
Relative Atomic Mass	77,928141866 ± 0,000003475 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	17,66 ± 0,03 m
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1968
Paritet	+

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁷⁹Rb

mass number	79
neutron number	42
Relative Atomic Mass	78,923990095 ± 0,000002085 Da
g-factor	1,34292 ± 0,00048
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	22,9 ± 0,5 m
spin	5/2
nuclear quadrupole moment	-0,12 ± 0,04
opdagelsesdato	1957
Paritet	+

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁸⁰Rb

mass number	80
neutron number	43
Relative Atomic Mass	79,922516442 ± 0,000002 Da
g-factor	-0,0833 ± 0,0007
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	33,4 ± 0,7 s
spin	1
nuclear quadrupole moment	0,42 ± 0,08
opdagelsesdato	1961
Paritet	+

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁸¹Rb

mass number	81
neutron number	44
Relative Atomic Mass	80,9189939 ± 0,000005265 Da
g-factor	1,3727333333333 ± 0,00093333333333333
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	4,572 ± 0,004 h
spin	3/2
nuclear quadrupole moment	0,48 ± 0,1
opdagelsesdato	1949
Paritet	-

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁸²Rb

mass number	82
neutron number	45
Relative Atomic Mass	81,918209023 ± 0,00000323 Da
g-factor	0,554403 ± 0,000016
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1,2575 ± 0,0002 m
spin	1
nuclear quadrupole moment	0,23 ± 0,1
opdagelsesdato	1949
Paritet	+

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁸³Rb

mass number	83
neutron number	46
Relative Atomic Mass	82,915114181 ± 0,0000025 Da
g-factor	0,56984 ± 0,00032
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	86,2 ± 0,1 d
spin	5/2
nuclear quadrupole moment	0,24 ± 0,05
opdagelsesdato	1950
Paritet	-

decay mode	Intensitet
ϵ (electron capture)	100%

⁸⁴Rb

mass number	84
neutron number	47
Relative Atomic Mass	83,914375223 ± 0,000002355 Da
g-factor	-0,6625 ± 0,001
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	32,82 ± 0,07 d
spin	2
nuclear quadrupole moment	-0,02 ± 0,04
opdagelsesdato	1947
Paritet	-

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	96.1%
β⁻ (β⁻ decay)	3.9%

⁸⁵Rb

mass number	85
neutron number	48
Relative Atomic Mass	84,91178973604 ± 0,00000000537 Da
g-factor	0,541224 ± 0,000016
natural abundance	72,17 ± 0,02
radioaktivitet	stable isotope
halveringstid	Not Radioactive ☢️
spin	5/2
nuclear quadrupole moment	0,276 ± 0,001
opdagelsesdato	1921
Paritet	-

⁸⁶Rb

mass number	86
neutron number	49
Relative Atomic Mass	85,911167443 ± 0,000000214 Da
g-factor	-0,8487 ± 0,0008
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	18,645 ± 0,008 d
spin	2
nuclear quadrupole moment	0,23 ± 0,06
opdagelsesdato	1941
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
ϵ (electron capture)	0.0052%

⁸⁷Rb

mass number	87
neutron number	50
Relative Atomic Mass	86,909180529 ± 0,000000006 Da
g-factor	1,8341933333333 ± 0,000053333333333333
natural abundance	27,83 ± 0,02
radioaktivitet	☢️ radioactive element
halveringstid	49,7 ± 0,3 Gy
spin	3/2
nuclear quadrupole moment	0,1335 ± 0,0005
opdagelsesdato	1921
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

⁸⁸Rb

mass number	88
neutron number	51
Relative Atomic Mass	87,91131559 ± 0,00000017 Da
g-factor	0,253755 ± 0,00001
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	17,78 ± 0,03 m
spin	2
nuclear quadrupole moment	-0,01 ± 0,11
opdagelsesdato	1939
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

⁸⁹Rb

mass number	89
neutron number	52
Relative Atomic Mass	88,912278136 ± 0,000005825 Da
g-factor	1,5887333333333 ± 0,00046666666666667
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	15,32 ± 0,1 m
spin	3/2
nuclear quadrupole moment	0,17 ± 0,03
opdagelsesdato	1940
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

⁹⁰Rb

mass number	90
neutron number	53
Relative Atomic Mass	89,914797557 ± 0,000006926 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	158 ± 5 s
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1951
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

⁹¹Rb

mass number	91
neutron number	54
Relative Atomic Mass	90,916537261 ± 0,000008375 Da
g-factor	1,4540666666667 ± 0,001
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	58,2 ± 0,3 s
spin	3/2
nuclear quadrupole moment	0,19 ± 0,05
opdagelsesdato	1951
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁹²Rb

mass number	92
neutron number	55
Relative Atomic Mass	91,919728477 ± 0,000006573 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	4,48 ± 0,03 s
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1960
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.0107%

⁹³Rb

mass number	93
neutron number	56
Relative Atomic Mass	92,922039334 ± 0,000008406 Da
g-factor	0,56368 ± 0,00064
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	5,84 ± 0,02 s
spin	5/2
nuclear quadrupole moment	0,21 ± 0,06
opdagelsesdato	1960
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	1.39%

⁹⁴Rb

mass number	94
neutron number	57
Relative Atomic Mass	93,926394819 ± 0,000002177 Da
g-factor	0,49936666666667 ± 0,0006
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,702 ± 0,005 s
spin	3
nuclear quadrupole moment	0,2 ± 0,07
opdagelsesdato	1961
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	10.3%

⁹⁵Rb

mass number	95
neutron number	58
Relative Atomic Mass	94,929263849 ± 0,000021733 Da
g-factor	0,5332 ± 0,0012
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	377,7 ± 0,8 ms
spin	5/2
nuclear quadrupole moment	0,26 ± 0,09
opdagelsesdato	1967
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	8.7%

⁹⁶Rb

mass number	96
neutron number	59
Relative Atomic Mass	95,934133398 ± 0,000003599 Da
g-factor	0,73275 ± 0,00085
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	201,5 ± 0,9 ms
spin	2
nuclear quadrupole moment	0,3 ± 0,09
opdagelsesdato	1967
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	13.7%
2n (2-neutron emission)

⁹⁷Rb

mass number	97
neutron number	60
Relative Atomic Mass	96,937177117 ± 0,000002052 Da
g-factor	1,2266666666667 ± 0,0013333333333333
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	169,1 ± 0,6 ms
spin	3/2
nuclear quadrupole moment	0,7
opdagelsesdato	1969
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	25.5%
2n (2-neutron emission)

⁹⁸Rb

mass number	98
neutron number	61
Relative Atomic Mass	97,941632317 ± 0,000017265 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	115 ± 6 ms
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1971
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	14.3%
2n (2-neutron emission)	0.054%

⁹⁹Rb

mass number	99
neutron number	62
Relative Atomic Mass	98,94511919 ± 0,000004327 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	54 ± 4 ms
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1971
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	17.3%
2n (2-neutron emission)

¹⁰⁰Rb

mass number	100
neutron number	63
Relative Atomic Mass	99,950331532 ± 0,000014089 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	51,3 ± 1,6 ms
spin	4
nuclear quadrupole moment
opdagelsesdato	1978
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	5.6%
2n (2-neutron emission)	0.15%

¹⁰¹Rb

mass number	101
neutron number	64
Relative Atomic Mass	100,954302 ± 0,000022 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	31,8 ± 3,3 ms
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1992
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	28%
2n (2-neutron emission)

¹⁰²Rb

mass number	102
neutron number	65
Relative Atomic Mass	101,960008 ± 0,000089 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	37 ± 4 ms
spin	4
nuclear quadrupole moment
opdagelsesdato	1995
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	65%
2n (2-neutron emission)

¹⁰³Rb

mass number	103
neutron number	66
Relative Atomic Mass	102,964401 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	26 ± 11 ms
spin	3/2
nuclear quadrupole moment
opdagelsesdato	2010
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

¹⁰⁴Rb

mass number	104
neutron number	67
Relative Atomic Mass	103,970531 ± 0,000537 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin
nuclear quadrupole moment
opdagelsesdato	2018
Paritet

decay mode	Intensitet
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

historie

opdager eller opfinder	R. Bunsen, G. Kirchoff
fundsted	Germany
opdagelsesdato	1861
etymologi	Latin: rubidus (deep red); the color its salts impart to flames.
udtale	roo-BID-i-em (engelsk)

source

Forekomst
Abundance in Earth's crust	90 mg/kg
natural abundance (verdenshave)	0,12 mg/L
natural abundance (menneskelige krop)	0,00046 %
natural abundance (Meteoroid)	0,00032 %
natural abundance (Solen)	0,000003 %
Abundance in Universe	0,000001 %

Nuclear Screening Constants

1	s	0.7922
2	p	3.9612
2	s	9.8432
3	d	15.3208
3	p	15.6967
3	s	15.1573
4	p	26.1192
4	s	24.612
5	s	32.0155

Rubidium on ChemicalAid

AEDA subject keyword ID	17540
Art & Architecture Thesaurus ID	300380179
Australian Educational Vocabulary ID	scot/3568
BNF	12165566c
Brockhaus Enzyklopädie online ID	rubidium
CAB ID	18779
CAS-nummer	7440-17-7
CPV Supplementary	AA35
ChEBI-ID	33322
ChemSpider ID	4512975
Common Procurement Vocabulary	14773000
DSSTOX compound identifier	DTXCID6047650
DSSTox substance ID	DTXSID4064686
Den Store Danske-ID	rubidium
Drugbank-ID	11346
ECHA Substance Infocard ID	100.028.296
Elhuyar ZTH ID	030348
Enciclopedia Treccani	rubidio
Encyclopædia Britannica Online-ID	science/rubidium
Encyclopædia Universalis-ID	rubidium
Fandom artikel-ID	sto:Rubidium
Freebase-ID	/m/025sckv
French Vikidia ID	Rubidium
GND-identifikator	4178576-9
Golden ID	Rubidium-EAWB8
InChI	InChI=1S/Rb
InChIKey	IGLNJRXAVVLDKE-UHFFFAOYSA-N
KBpedia ID	Rubidium
Krugosvet article	nauka_i_tehnika/himiya/RUBIDI.html
LCAuth	sh85115684
MeSH ID	D012413
Mindat mineral ID	52496
NE.se ID	rubidium
Namuwiki ID	루비듐
National Library of Israel J9U ID	987007546156605171
OmegaWiki-betydningsdefinition	158318
OpenAlex ID	C526903357
PSH-ID	5747
Probes And Drugs ID	PD077494
PubChem CID	5357696
Quora emne-ID	Rubidium
RxNorm ID	1311489
Store katalanske encyklopædi-ID	0140247
Store norske leksikon-ID	rubidium
Store russiske encyklopædi Online-ID	3517702
UNII	MLT4718TJW
USGS Thesaurus ID	1562
WordNet 3.1 Synset ID	14677133-n
YSO ID	38859
ZVG-nummer	7370

Rubidium (Rb)

Fysisk Egenskab

Kemisk Egenskab

øvrige

Isotopes of Rubidium

71Rb

72Rb

73Rb

74Rb

75Rb

76Rb

77Rb

78Rb

79Rb

80Rb

81Rb

82Rb

83Rb

84Rb

85Rb

86Rb

87Rb

88Rb

89Rb

90Rb

91Rb

92Rb

93Rb

94Rb

95Rb

96Rb

97Rb

98Rb

99Rb

100Rb

101Rb

102Rb

103Rb

104Rb

historie

source

Nuclear Screening Constants

⁷¹Rb

⁷²Rb

⁷³Rb

⁷⁴Rb

⁷⁵Rb

⁷⁶Rb

⁷⁷Rb

⁷⁸Rb

⁷⁹Rb

⁸⁰Rb

⁸¹Rb

⁸²Rb

⁸³Rb

⁸⁴Rb

⁸⁵Rb

⁸⁶Rb

⁸⁷Rb

⁸⁸Rb

⁸⁹Rb

⁹⁰Rb

⁹¹Rb

⁹²Rb

⁹³Rb

⁹⁴Rb

⁹⁵Rb

⁹⁶Rb

⁹⁷Rb

⁹⁸Rb

⁹⁹Rb

¹⁰⁰Rb

¹⁰¹Rb

¹⁰²Rb

¹⁰³Rb

¹⁰⁴Rb