Rubidioa (Rb)

Zenbaki atomikoa 37 duen elementu kimikoa. Metal alkalinoa da, zuria, biguna eta arina

Atomic Number	37
Atomic Weight	85.4678
masa-zenbaki	85

Group	1
Period	5
Block	s

protoi	37 p⁺
neutroi	48 n⁰
elektroi	37 e^-

Animated Bohrren eredu atomikoa of Rb (Rubidioa)

Propietate Fisiko

Erradio Atomiko	235 pm 240 pm
bolumen molar	55,9 cm³/mol
Erradio Kobalente	210 pm 202 pm 225 pm 220 pm
Metallic Radius	216 pm 248 pm
Erradio ioniko	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 Waalsen erradio	290 pm 303 pm 325 pm 303 pm 411,4 pm
dentsitatea	1,53 g/cm³ 1.460 kg/m³

Magnitude Fisiko

{ERROR}

energia

proton affinity
Afinitate elektroniko	0,48592 eV/particle
ionizazio energia	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

Irakite-entalpia	75,8 kJ/mol
urtze-entalpia	2,2 kJ/mol
formazio entalpia estandarra	80,9 kJ/mol
elektroi

elektroi geruza	2, 8, 18, 8, 1

balentzia-elektroi	1 ⓘ

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

Oxidazio-egoera	-1, 1
Elektronegatibotasun	4,177 eV/particle 0.104686 0.82
Electrophilicity Index	0,7363448717297969 eV/particle
materiaren funtsezko egoera

materiaren egoera
materiaren egoera gaseoso
Boiling Point	961,15 K
Melting Point	312,45 K
critical pressure	16 MPa
critical temperature	2.093,15 K
Puntu hirukoitz	312,41 K
appearance
kolore	Black #ff1493 #702eb0 #702eb0
appearance	grey white
errefrakzio-indize
thermodynamic material property
Thermal Conductivity	58,2 W/(m K)
Bero-dilatazio
molar heat capacity	31,06 J/(mol K)
Specific Heat Capacity	0,363 J/(g⋅K)
indize adiabatiko
electrical properties
type	Conductor
Eroankortasun elektriko	8,3 MS/m
Erresistibitate elektriko	0,00000012 Ω*m
Supereroankortasun
Magnetismo
type	paramagnetic
suszeptibilitate magnetiko (Mass)	0,0000000026 m³/Kg
suszeptibilitate magnetiko (Molar)	0,000000000222 m³/mol
suszeptibilitate magnetiko (Volume)	0,00000398
magnetic ordering
Curieren tenperatura
Néel temperature
egitura
Crystal Structure	{ERROR}
lattice constant	5,59 Å
Lattice Angles	π/2, π/2, π/2
materialen propietate mekaniko
Gogortasun	0,216 MPa 0,3 MPa
konprimagarritasun-modulu	2,5 GPa
Zizaila modulua
Youngen modulu	2,4 GPa
Poissonen modulu
Soinuaren lastertasun	1.300 m/s
classification
Category	Actinides, Alkali metals
CAS Group	IA
IUPAC Group	IA
Glawe Number	9
Mendeleev Number	4
Pettifor Number	9
Geochemical Class	alkali metal
Goldschmidt classification	litophile

beste batzuk

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
zenbaki kuantiko	2S1/2
talde espazial	229 (Im_3m)

Isotopes of Rubidium

Stable Isotopes	1
Unstable Isotopes	33
Natural Isotopes	2

⁷¹Rb

masa-zenbaki	71
neutron number	34
Atomo-Masa Erlatibo	70,965335 ± 0,000429 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	5/2
nuclear quadrupole moment
aurkikuntza-data
parity	-

decay mode	intensity
p (proton emission)

⁷²Rb

masa-zenbaki	72
neutron number	35
Atomo-Masa Erlatibo	71,958851 ± 0,000537 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	103 ± 22 ns
spin	1
nuclear quadrupole moment
aurkikuntza-data	2017
parity	+

decay mode	intensity
p (proton emission)

⁷³Rb

masa-zenbaki	73
neutron number	36
Atomo-Masa Erlatibo	72,950604506 ± 0,000043794 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1996
parity	-

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

⁷⁴Rb

masa-zenbaki	74
neutron number	37
Atomo-Masa Erlatibo	73,944265867 ± 0,000003249 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	64,78 ± 0,03 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1977
parity	+

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

⁷⁵Rb

masa-zenbaki	75
neutron number	38
Atomo-Masa Erlatibo	74,9385732 ± 0,000001266 Da
g-factor	0,386 ± 0,00066666666666667
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	19 ± 1,2 s
spin	3/2
nuclear quadrupole moment	0,81 ± 0,04
aurkikuntza-data	1975
parity	-

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

⁷⁶Rb

masa-zenbaki	76
neutron number	39
Atomo-Masa Erlatibo	75,935073031 ± 0,000001006 Da
g-factor	−0,372552 ± 0,000011
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	36,5 ± 0,6 s
spin	1
nuclear quadrupole moment	0,41 ± 0,09
aurkikuntza-data	1969
parity	-

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

⁷⁷Rb

masa-zenbaki	77
neutron number	40
Atomo-Masa Erlatibo	76,930401599 ± 0,0000014 Da
g-factor	0,43622666666667 ± 0,000013333333333333
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	3,78 ± 0,04 m
spin	3/2
nuclear quadrupole moment	0,84 ± 0,17
aurkikuntza-data	1972
parity	-

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

⁷⁸Rb

masa-zenbaki	78
neutron number	41
Atomo-Masa Erlatibo	77,928141866 ± 0,000003475 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	17,66 ± 0,03 m
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1968
parity	+

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

⁷⁹Rb

masa-zenbaki	79
neutron number	42
Atomo-Masa Erlatibo	78,923990095 ± 0,000002085 Da
g-factor	1,34292 ± 0,00048
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	22,9 ± 0,5 m
spin	5/2
nuclear quadrupole moment	−0,12 ± 0,04
aurkikuntza-data	1957
parity	+

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

⁸⁰Rb

masa-zenbaki	80
neutron number	43
Atomo-Masa Erlatibo	79,922516442 ± 0,000002 Da
g-factor	−0,0833 ± 0,0007
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	33,4 ± 0,7 s
spin	1
nuclear quadrupole moment	0,42 ± 0,08
aurkikuntza-data	1961
parity	+

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

⁸¹Rb

masa-zenbaki	81
neutron number	44
Atomo-Masa Erlatibo	80,9189939 ± 0,000005265 Da
g-factor	1,3727333333333 ± 0,00093333333333333
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4,572 ± 0,004 h
spin	3/2
nuclear quadrupole moment	0,48 ± 0,1
aurkikuntza-data	1949
parity	-

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

⁸²Rb

masa-zenbaki	82
neutron number	45
Atomo-Masa Erlatibo	81,918209023 ± 0,00000323 Da
g-factor	0,554403 ± 0,000016
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,2575 ± 0,0002 m
spin	1
nuclear quadrupole moment	0,23 ± 0,1
aurkikuntza-data	1949
parity	+

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

⁸³Rb

masa-zenbaki	83
neutron number	46
Atomo-Masa Erlatibo	82,915114181 ± 0,0000025 Da
g-factor	0,56984 ± 0,00032
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	86,2 ± 0,1 d
spin	5/2
nuclear quadrupole moment	0,24 ± 0,05
aurkikuntza-data	1950
parity	-

decay mode	intensity
ϵ (electron capture)	100%

⁸⁴Rb

masa-zenbaki	84
neutron number	47
Atomo-Masa Erlatibo	83,914375223 ± 0,000002355 Da
g-factor	−0,6625 ± 0,001
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	32,82 ± 0,07 d
spin	2
nuclear quadrupole moment	−0,02 ± 0,04
aurkikuntza-data	1947
parity	-

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

⁸⁵Rb

masa-zenbaki	85
neutron number	48
Atomo-Masa Erlatibo	84,91178973604 ± 0,00000000537 Da
g-factor	0,541224 ± 0,000016
natural abundance	72,17 ± 0,02
desintegrazio erradioaktibo	isotopo egonkor
Semidesintegrazio-periodo	Not Radioactive ☢️
spin	5/2
nuclear quadrupole moment	0,276 ± 0,001
aurkikuntza-data	1921
parity	-

⁸⁶Rb

masa-zenbaki	86
neutron number	49
Atomo-Masa Erlatibo	85,911167443 ± 0,000000214 Da
g-factor	−0,8487 ± 0,0008
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	18,645 ± 0,008 d
spin	2
nuclear quadrupole moment	0,23 ± 0,06
aurkikuntza-data	1941
parity	-

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

⁸⁷Rb

masa-zenbaki	87
neutron number	50
Atomo-Masa Erlatibo	86,909180529 ± 0,000000006 Da
g-factor	1,8341933333333 ± 0,000053333333333333
natural abundance	27,83 ± 0,02
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	49,7 ± 0,3 Gy
spin	3/2
nuclear quadrupole moment	0,1335 ± 0,0005
aurkikuntza-data	1921
parity	-

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

⁸⁸Rb

masa-zenbaki	88
neutron number	51
Atomo-Masa Erlatibo	87,91131559 ± 0,00000017 Da
g-factor	0,253755 ± 0,00001
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	17,78 ± 0,03 m
spin	2
nuclear quadrupole moment	−0,01 ± 0,11
aurkikuntza-data	1939
parity	-

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

⁸⁹Rb

masa-zenbaki	89
neutron number	52
Atomo-Masa Erlatibo	88,912278136 ± 0,000005825 Da
g-factor	1,5887333333333 ± 0,00046666666666667
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	15,32 ± 0,1 m
spin	3/2
nuclear quadrupole moment	0,17 ± 0,03
aurkikuntza-data	1940
parity	-

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

⁹⁰Rb

masa-zenbaki	90
neutron number	53
Atomo-Masa Erlatibo	89,914797557 ± 0,000006926 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	158 ± 5 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1951
parity	-

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

⁹¹Rb

masa-zenbaki	91
neutron number	54
Atomo-Masa Erlatibo	90,916537261 ± 0,000008375 Da
g-factor	1,4540666666667 ± 0,001
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	58,2 ± 0,3 s
spin	3/2
nuclear quadrupole moment	0,19 ± 0,05
aurkikuntza-data	1951
parity	-

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

⁹²Rb

masa-zenbaki	92
neutron number	55
Atomo-Masa Erlatibo	91,919728477 ± 0,000006573 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4,48 ± 0,03 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1960
parity	-

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

⁹³Rb

masa-zenbaki	93
neutron number	56
Atomo-Masa Erlatibo	92,922039334 ± 0,000008406 Da
g-factor	0,56368 ± 0,00064
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	5,84 ± 0,02 s
spin	5/2
nuclear quadrupole moment	0,21 ± 0,06
aurkikuntza-data	1960
parity	-

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

⁹⁴Rb

masa-zenbaki	94
neutron number	57
Atomo-Masa Erlatibo	93,926394819 ± 0,000002177 Da
g-factor	0,49936666666667 ± 0,0006
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,702 ± 0,005 s
spin	3
nuclear quadrupole moment	0,2 ± 0,07
aurkikuntza-data	1961
parity	-

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

⁹⁵Rb

masa-zenbaki	95
neutron number	58
Atomo-Masa Erlatibo	94,929263849 ± 0,000021733 Da
g-factor	0,5332 ± 0,0012
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	377,7 ± 0,8 ms
spin	5/2
nuclear quadrupole moment	0,26 ± 0,09
aurkikuntza-data	1967
parity	-

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

⁹⁶Rb

masa-zenbaki	96
neutron number	59
Atomo-Masa Erlatibo	95,934133398 ± 0,000003599 Da
g-factor	0,73275 ± 0,00085
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	201,5 ± 0,9 ms
spin	2
nuclear quadrupole moment	0,3 ± 0,09
aurkikuntza-data	1967
parity	-

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

⁹⁷Rb

masa-zenbaki	97
neutron number	60
Atomo-Masa Erlatibo	96,937177117 ± 0,000002052 Da
g-factor	1,2266666666667 ± 0,0013333333333333
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	169,1 ± 0,6 ms
spin	3/2
nuclear quadrupole moment	0,7
aurkikuntza-data	1969
parity	+

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

⁹⁸Rb

masa-zenbaki	98
neutron number	61
Atomo-Masa Erlatibo	97,941632317 ± 0,000017265 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	115 ± 6 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1971
parity	-

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

⁹⁹Rb

masa-zenbaki	99
neutron number	62
Atomo-Masa Erlatibo	98,94511919 ± 0,000004327 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	54 ± 4 ms
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1971
parity	+

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

¹⁰⁰Rb

masa-zenbaki	100
neutron number	63
Atomo-Masa Erlatibo	99,950331532 ± 0,000014089 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	51,3 ± 1,6 ms
spin	4
nuclear quadrupole moment
aurkikuntza-data	1978
parity	-

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

¹⁰¹Rb

masa-zenbaki	101
neutron number	64
Atomo-Masa Erlatibo	100,954302 ± 0,000022 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	31,8 ± 3,3 ms
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1992
parity	+

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

¹⁰²Rb

masa-zenbaki	102
neutron number	65
Atomo-Masa Erlatibo	101,960008 ± 0,000089 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	37 ± 4 ms
spin	4
nuclear quadrupole moment
aurkikuntza-data	1995
parity	+

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

¹⁰³Rb

masa-zenbaki	103
neutron number	66
Atomo-Masa Erlatibo	102,964401 ± 0,000429 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	26 ± 11 ms
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	2010
parity	+

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

¹⁰⁴Rb

masa-zenbaki	104
neutron number	67
Atomo-Masa Erlatibo	103,970531 ± 0,000537 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin
nuclear quadrupole moment
aurkikuntza-data	2018
parity

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

historia

aurkitzailea edo asmatzailea	R. Bunsen, G. Kirchoff
aurkikuntzaren lekua	Germany
aurkikuntza-data	1861
etimologia	Latin: rubidus (deep red); the color its salts impart to flames.
pronunciation	roo-BID-i-em (ingelesa)

source

Abundance
Abundance in Earth's crust	90 mg/kg
natural abundance (ozeano)	0,12 mg/L
natural abundance (gizakiaren gorputza)	0,00046 %
natural abundance (Meteoroide)	0,00032 %
natural abundance (Eguzkia)	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

Rubidioa on ChemicalAid

Rubidioa (Rb)

Propietate Fisiko

Magnitude Fisiko

beste batzuk

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

historia

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