Lihat sumber Isotop rubidium

{{more citations needed|date=Juli 2022}}
{{Kotak info isotop rubidium}}
'''[[Rubidium]]''' ('''<sub>37</sub>Rb''') memiliki 36 [[isotop]], dengan rubidium yang terbentuk secara alami hanya terdiri dari dua isotop; <sup>85</sup>Rb (72,2%) dan <sup>87</sup>Rb yang [[Peluruhan radioaktif|radioaktif]] (27,8%). Campuran normal{{clarify|date=May 2018}} rubidium cukup radioaktif untuk mengaburkan [[film gulung]] dalam waktu sekitar 30 hingga 60 hari.

<sup>87</sup>Rb memiliki [[waktu paruh]] {{val|4.92|e=10}} tahun. Ia dengan mudah menggantikan [[kalium]] dalam mineral, dan karena itu cukup tersebar luas. <sup>87</sup>Rb telah digunakan secara luas dalam [[Penanggalan radiometrik|penanggalan batuan]]; <sup>87</sup>Rb meluruh menjadi [[Stronsium-87|<sup>87</sup>Sr]] yang stabil melalui emisi [[partikel beta]] (sebuah [[elektron]] yang dikeluarkan dari inti). Selama [[Kristalisasi fraksional (geologi)|kristalisasi fraksional]], [[Stronsium|Sr]] cenderung menjadi terkonsentrasi di [[plagioklase]], meninggalkan Rb dalam fase cair. Oleh karena itu, rasio Rb/Sr dalam sisa [[magma]] dapat meningkat dari waktu ke waktu, menghasilkan batuan dengan peningkatan rasio Rb/Sr dengan peningkatan [[Diferensiasi magma|diferensiasi]]. Rasio tertinggi (10 atau lebih tinggi) terjadi pada [[pegmatit]]. Jika jumlah awal Sr diketahui atau dapat diekstrapolasi, maka umurnya dapat ditentukan dengan pengukuran konsentrasi Rb dan Sr dan rasio <sup>87</sup>Sr/[[Stronsium-86|<sup>86</sup>Sr]]. Tanggal menunjukkan usia sebenarnya dari mineral hanya jika batuan belum diubah kemudian. Lihat [[penanggalan rubidium–stronsium]] untuk diskusi yang lebih rinci.

Selain <sup>87</sup>Rb, [[Radionuklida|radioisotop]] lain yang berumur paling panjang adalah <sup>83</sup>Rb dengan waktu paruh 86,2 hari, <sup>84</sup>Rb dengan waktu paruh 33,1 hari, dan <sup>86</sup>Rb dengan waktu paruh 18,642 hari. Semua radioisotop lain memiliki waktu paruh kurang dari satu hari.

[[Rubidium-82|<sup>82</sup>Rb]] digunakan dalam beberapa pemindaian [[tomografi emisi positron]] [[jantung]] untuk menilai [[Pemindaian perfusi miokard|perfusi miokard]]. Ia memiliki waktu paruh 1,273 menit. Ia tidak ditemukan secara alami, tetapi dapat dibuat dari peluruhan [[Stronsium-82|<sup>82</sup>Sr]].

==Daftar isotop==
{{Isotopes table
|symbol=Rb
|refs=<!-- not NUBASE2016 yet (2019-07-14) -->
|notes=m, unc(), exen#, hl#, hl-nst, mass#, spin(), spin#, daughter-st, daughter-nst, p, n, IT, EC
}}
|-
| <sup>71</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 34
| 70,96532(54)#
|
| [[Emisi proton|p]]
| <sup>70</sup>Kr
| 5/2−#
|
|
|-
| <sup>72</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 35
| 71,95908(54)#
| <1,5&nbsp;[[Mikro-|μ]]dtk
| p
| <sup>71</sup>Kr
| 3+#
|
|
|-
| style="text-indent:1em" | <sup>72m</sup>Rb
| colspan="3" style="text-indent:2em" | 100(100)#&nbsp;keV
| 1#&nbsp;μdtk
| p
| <sup>71</sup>Kr
| 1−#
|
|
|-
| <sup>73</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 36
| 72,95056(16)#
| <30&nbsp;[[Nano-|n]]dtk
| p
| <sup>72</sup>Kr
| 3/2−#
|
|
|-
| <sup>74</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 37
| 73,944265(4)
| 64,76(3)&nbsp;[[Mili-|m]]dtk
| [[Peluruhan beta|β<sup>+</sup>]]
| <sup>74</sup>Kr
| (0+)
|
|
|-
| <sup>75</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 38
| 74,938570(8)
| 19,0(12)&nbsp;dtk
| β<sup>+</sup>
| <sup>75</sup>Kr
| (3/2−)
|
|
|-
| rowspan=2|<sup>76</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 39
| rowspan=2|75,9350722(20)
| rowspan=2|36,5(6)&nbsp;dtk
| β<sup>+</sup>
| <sup>76</sup>Kr
| rowspan=2|1(−)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, [[Peluruhan alfa|α]] (3,8{{e|-7}}%)
| <sup>72</sup>Se
|-
| style="text-indent:1em" | <sup>76m</sup>Rb
| colspan="3" style="text-indent:2em" | 316,93(8)&nbsp;keV
| 3,050(7)&nbsp;μdtk
|
|
| (4+)
|
|
|-
| <sup>77</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 40
| 76,930408(8)
| 3,77(4)&nbsp;mnt
| β<sup>+</sup>
| <sup>77</sup>Kr
| 3/2−
|
|
|-
| <sup>78</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 41
| 77,928141(8)
| 17,66(8)&nbsp;mnt
| β<sup>+</sup>
| '''''<sup>78</sup>Kr'''''
| 0(+)
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>78m</sup>Rb
| rowspan=2 colspan="3" style="text-indent:2em" | 111,20(10)&nbsp;keV
| rowspan=2|5,74(5)&nbsp;mnt
| β<sup>+</sup> (90%)
| '''''<sup>78</sup>Kr'''''
| rowspan=2|4(−)
| rowspan=2|
| rowspan=2|
|-
| [[Transisi isomerik|IT]] (10%)
| <sup>78</sup>Rb
|-
| <sup>79</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 42
| 78,923989(6)
| 22,9(5)&nbsp;mnt
| β<sup>+</sup>
| <sup>79</sup>Kr
| 5/2+
|
|
|-
| <sup>80</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 43
| 79,922519(7)
| 33,4(7)&nbsp;dtk
| β<sup>+</sup>
| '''<sup>80</sup>Kr'''
| 1+
|
|
|-
| style="text-indent:1em" | <sup>80m</sup>Rb
| colspan="3" style="text-indent:2em" | 494,4(5)&nbsp;keV
| 1,6(2)&nbsp;μdtk
|
|
| 6+
|
|
|-
| <sup>81</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 44
| 80,918996(6)
| 4,570(4)&nbsp;jam
| β<sup>+</sup>
| <sup>81</sup>Kr
| 3/2−
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>81m</sup>Rb
| rowspan=2 colspan="3" style="text-indent:2em" | 86,31(7)&nbsp;keV
| rowspan=2|30,5(3)&nbsp;mnt
| IT (97,6%)
| <sup>81</sup>Rb
| rowspan=2|9/2+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (2,4%)
| <sup>81</sup>Kr
|-
| [[Rubidium-82|<sup>82</sup>Rb]]
| style="text-align:right" | 37
| style="text-align:right" | 45
| 81,9182086(30)
| 1,273(2)&nbsp;mnt
| β<sup>+</sup>
| '''<sup>82</sup>Kr'''
| 1+
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>82m</sup>Rb
| rowspan=2 colspan="3" style="text-indent:2em" | 69,0(15)&nbsp;keV
| rowspan=2|6,472(5)&nbsp;jam
| β<sup>+</sup> (99,67%)
| '''<sup>82</sup>Kr'''
| rowspan=2|5−
| rowspan=2|
| rowspan=2|
|-
| IT (0,33%)
| <sup>82</sup>Rb
|-
| <sup>83</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 46
| 82,915110(6)
| 86,2(1)&nbsp;hri
| [[Penangkapan elektron|EC]]
| '''<sup>83</sup>Kr'''
| 5/2−
|
|
|-
| style="text-indent:1em" | <sup>83m</sup>Rb
| colspan="3" style="text-indent:2em" | 42,11(4)&nbsp;keV
| 7,8(7)&nbsp;mdtk
| IT
| <sup>83</sup>Rb
| 9/2+
|
|
|-
| rowspan=2|<sup>84</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 47
| rowspan=2|83,914385(3)
| rowspan=2|33,1(1)&nbsp;hri
| β<sup>+</sup> (96,2%)
| '''<sup>84</sup>Kr'''
| rowspan=2|2−
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup> (3,8%)
| '''<sup>84</sup>Sr'''
|-
| rowspan=2 style="text-indent:1em" | <sup>84m</sup>Rb
| rowspan=2 colspan="3" style="text-indent:2em" | 463,62(9)&nbsp;keV
| rowspan=2|20,26(4)&nbsp;mnt
| IT (>99,9%)
| <sup>84</sup>Rb
| rowspan=2|6−
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (<0,1%)
| '''<sup>84</sup>Kr'''
|-
| <sup>85</sup>Rb<ref group="n" name="FP">[[Produk pembelahan atom|Produk fisi]]</ref>
| style="text-align:right" | 37
| style="text-align:right" | 48
| 84,911789738(12)
| colspan=3 align=center|'''Stabil'''
| 5/2−
| 0,7217(2)
|
|-
| rowspan=2|<sup>86</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 49
| rowspan=2|85,91116742(21)
| rowspan=2|18,642(18)&nbsp;hri
| β<sup>−</sup> (99,9948%)
| '''<sup>86</sup>Sr'''
| rowspan=2|2−
| rowspan=2|
| rowspan=2|
|-
| EC (0,0052%)
| '''<sup>86</sup>Kr'''
|-
| style="text-indent:1em" | <sup>86m</sup>Rb
| colspan="3" style="text-indent:2em" | 556,05(18)&nbsp;keV
| 1,017(3)&nbsp;mnt
| IT
| <sup>86</sup>Rb
| 6−
|
|
|-
| <sup>87</sup>Rb<ref group="n">[[Radionuklida]] [[Nuklida primordial|primordial]]</ref><ref group="n">Digunakan dalam [[penanggalan rubidium–stronsium]]</ref><ref group="n" name="FP" />
| style="text-align:right" | 37
| style="text-align:right" | 50
| 86,909180527(13)
| '''4,923(22){{e|10}} thn'''
| β<sup>−</sup>
| '''<sup>87</sup>Sr'''
| 3/2−
| 0,2783(2)
|
|-
| <sup>88</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 51
| 87,91131559(17)
| 17,773(11)&nbsp;mnt
| β<sup>−</sup>
| '''<sup>88</sup>Sr'''
| 2−
|
|
|-
| <sup>89</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 52
| 88,912278(6)
| 15,15(12)&nbsp;mnt
| β<sup>−</sup>
| <sup>89</sup>Sr
| 3/2−
|
|
|-
| <sup>90</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 53
| 89,914802(7)
| 158(5)&nbsp;dtk
| β<sup>−</sup>
| <sup>90</sup>Sr
| 0−
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>90m</sup>Rb
| rowspan=2 colspan="3" style="text-indent:2em" | 106,90(3)&nbsp;keV
| rowspan=2|258(4)&nbsp;dtk
| β<sup>−</sup> (97,4%)
| <sup>90</sup>Sr
| rowspan=2|3−
| rowspan=2|
| rowspan=2|
|-
| IT (2,6%)
| <sup>90</sup> Rb
|-
| <sup>91</sup>Rb
| style="text-align:right" | 37
| style="text-align:right" | 54
| 90,916537(9)
| 58,4(4)&nbsp;dtk
| β<sup>−</sup>
| <sup>91</sup>Sr
| 3/2(−)
|
|
|-
| rowspan=2|<sup>92</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 55
| rowspan=2|91,919729(7)
| rowspan=2|4,492(20)&nbsp;dtk
| β<sup>−</sup> (99,98%)
| <sup>92</sup>Sr
| rowspan=2|0−
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, [[Emisi neutron|n]] (0,0107%)
| <sup>91</sup>Sr
|-
| rowspan=2|<sup>93</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 56
| rowspan=2|92,922042(8)
| rowspan=2|5,84(2)&nbsp;dtk
| β<sup>−</sup> (98,65%)
| <sup>93</sup>Sr
| rowspan=2|5/2−
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (1,35%)
| <sup>92</sup>Sr
|-
| style="text-indent:1em" | <sup>93m</sup>Rb
| colspan="3" style="text-indent:2em" | 253,38(3)&nbsp;keV
| 57(15)&nbsp;μdtk
|
|
| (3/2−,5/2−)
|
|
|-
| rowspan=2|<sup>94</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 57
| rowspan=2|93,926405(9)
| rowspan=2|2,702(5)&nbsp;dtk
| β<sup>−</sup> (89,99%)
| <sup>94</sup>Sr
| rowspan=2|3(−)
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (10,01%)
| <sup>93</sup>Sr
|-
| rowspan=2|<sup>95</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 58
| rowspan=2|94,929303(23)
| rowspan=2|377,5(8)&nbsp;mdtk
| β<sup>−</sup> (91,27%)
| <sup>95</sup>Sr
| rowspan=2|5/2−
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (8,73%)
| <sup>94</sup>Sr
|-
| rowspan=2|<sup>96</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 59
| rowspan=2|95,93427(3)
| rowspan=2|202,8(33)&nbsp;mdtk
| β<sup>−</sup> (86,6%)
| <sup>96</sup>Sr
| rowspan=2|2+
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (13,4%)
| <sup>95</sup>Sr
|-
| rowspan=3 style="text-indent:1em" | <sup>96m</sup>Rb
| rowspan=3 colspan="3" style="text-indent:2em" | 0(200)#&nbsp;keV
| rowspan=3|200#&nbsp;mdtk [>1&nbsp;mdtk]
| β<sup>−</sup>
| <sup>96</sup>Sr
| rowspan=3|1(−#)
| rowspan=3|
| rowspan=3|
|-
| IT
| <sup>96</sup>Rb
|-
| β<sup>−</sup>, n
| <sup>95</sup>Sr
|-
| rowspan=2|<sup>97</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 60
| rowspan=2|96,93735(3)
| rowspan=2|169,9(7)&nbsp;mdtk
| β<sup>−</sup> (74,3%)
| <sup>97</sup>Sr
| rowspan=2|3/2+
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (25,7%)
| <sup>96</sup>Sr
|-
| rowspan=3|<sup>98</sup>Rb
| rowspan=3 style="text-align:right" | 37
| rowspan=3 style="text-align:right" | 61
| rowspan=3|97,94179(5)
| rowspan=3|114(5)&nbsp;mdtk
| β<sup>−</sup>(86,14%)
| <sup>98</sup>Sr
| rowspan=3|(0,1)(−#)
| rowspan=3|
| rowspan=3|
|-
| β<sup>−</sup>, n (13,8%)
| <sup>97</sup>Sr
|-
| β<sup>−</sup>, 2n (0,051%)
| <sup>96</sup>Sr
|-
| style="text-indent:1em" | <sup>98m</sup>Rb
| colspan="3" style="text-indent:2em" | 290(130)&nbsp;keV
| 96(3)&nbsp;mdtk
| β<sup>−</sup>
| <sup>97</sup>Sr
| (3,4)(+#)
|
|
|-
| rowspan=2|<sup>99</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 62
| rowspan=2|98,94538(13)
| rowspan=2|50,3(7)&nbsp;mdtk
| β<sup>−</sup> (84,1%)
| <sup>99</sup>Sr
| rowspan=2|(5/2+)
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (15,9%)
| <sup>98</sup>Sr
|-
| rowspan=3|<sup>100</sup>Rb
| rowspan=3 style="text-align:right" | 37
| rowspan=3 style="text-align:right" | 63
| rowspan=3|99,94987(32)#
| rowspan=3|51(8)&nbsp;mdtk
| β<sup>−</sup> (94,25%)
| <sup>100</sup>Sr
| rowspan=3|(3+)
| rowspan=3|
| rowspan=3|
|-
| β<sup>−</sup>, n (5,6%)
| <sup>99</sup>Sr
|-
| β<sup>−</sup>, 2n (0,15%)
| <sup>98</sup>Sr
|-
| rowspan=2|<sup>101</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 64
| rowspan=2|100,95320(18)
| rowspan=2|32(5)&nbsp;mdtk
| β<sup>−</sup> (69%)
| <sup>101</sup>Sr
| rowspan=2|(3/2+)#
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (31%)
| <sup>100</sup>Sr
|-
| rowspan=2|<sup>102</sup>Rb
| rowspan=2 style="text-align:right" | 37
| rowspan=2 style="text-align:right" | 65
| rowspan=2|101,95887(54)#
| rowspan=2|37(5)&nbsp;mdtk
| β<sup>−</sup> (82%)
| <sup>102</sup>Sr
| rowspan=2|
| rowspan=2|
| rowspan=2|
|-
| β<sup>−</sup>, n (18%)
| <sup>101</sup>Sr
|-
| <sup>103</sup>Rb<ref name="Ohnishi">{{cite journal |title=Identification of 45 New Neutron-Rich Isotopes Produced by In-Flight Fission of a <sup>238</sup>U Beam at 345 MeV/nucleon |first1=Tetsuya |last1=Ohnishi |first2=Toshiyuki |last2=Kubo |first3=Kensuke |last3=Kusaka |display-authors=etal |date=2010 |journal=J. Phys. Soc. Jpn. |publisher=Physical Society of Japan |volume=79 |number=7 |page=073201 |doi=10.1143/JPSJ.79.073201| doi-access=free}}</ref>
| style="text-align:right" | 37
| style="text-align:right" | 66
| 
| 26 mdtk
| β<sup>−</sup>
| <sup>103</sup>Sr
| 
|
|
|-
| <sup>104</sup>Rb<ref name="Shimizu">{{Cite journal|url=https://journals.jps.jp/doi/pdf/10.7566/JPSJ.87.014203|doi = 10.7566/JPSJ.87.014203|title = Observation of New Neutron-rich Isotopes among Fission Fragments from In-flight Fission of 345 MeV/Nucleon 238U: Search for New Isotopes Conducted Concurrently with Decay Measurement Campaigns|year = 2018|last1 = Shimizu|first1 = Yohei|last2 = Kubo|first2 = Toshiyuki|last3 = Fukuda|first3 = Naoki|last4 = Inabe|first4 = Naohito|last5 = Kameda|first5 = Daisuke|last6 = Sato|first6 = Hiromi|last7 = Suzuki|first7 = Hiroshi|last8 = Takeda|first8 = Hiroyuki|last9 = Yoshida|first9 = Koichi|last10 = Lorusso|first10 = Giuseppe|last11 = Watanabe|first11 = Hiroshi|last12 = Simpson|first12 = Gary S.|last13 = Jungclaus|first13 = Andrea|last14 = Baba|first14 = Hidetada|last15 = Browne|first15 = Frank|last16 = Doornenbal|first16 = Pieter|last17 = Gey|first17 = Guillaunme|last18 = Isobe|first18 = Tadaaki|last19 = Li|first19 = Zhihuan|last20 = Nishimura|first20 = Shunji|last21 = Söderström|first21 = Pär-Anders|last22 = Sumikama|first22 = Toshiyuki|last23 = Taprogge|first23 = Jan|last24 = Vajta|first24 = Zsolt|last25 = Wu|first25 = Jin|last26 = Xu|first26 = Zhengyu|last27 = Odahara|first27 = Atsuko|last28 = Yagi|first28 = Ayumi|last29 = Nishibata|first29 = Hiroki|last30 = Lozeva|first30 = Radomira|journal = Journal of the Physical Society of Japan|volume = 87|page = 014203|display-authors = 1}}</ref>
| style="text-align:right" | 37
| style="text-align:right" | 67
| 
| 35# mdtk (>550 ndtk)
| β<sup>−</sup>?
| <sup>104</sup>Sr
| 
|
|
|-
| <sup>105</sup>Rb<ref name="Sumikama(Rb)">{{cite journal|title=Observation of new neutron-rich isotopes in the vicinity of 110Zr|url=https://journals.aps.org/prc/abstract/10.1103/PhysRevC.103.014614|first1=T.|last1=Sumikama|journal=Physical Review C|display-authors=et al.|date=2021|volume=103|issue=1|page=014614|doi=10.1103/PhysRevC.103.014614|s2cid=234019083}}</ref>
| style="text-align:right" | 37
| style="text-align:right" | 68
| 
| 
| 
| 
| 
|
|
|-
| <sup>106</sup>Rb<ref name="Sumikama(Rb)" />
| style="text-align:right" | 37
| style="text-align:right" | 69
| 
| 
| 
| 
| 
|
|
{{Isotopes table/footer}}

==Rubidium-87==
'''Rubidium-87''' adalah sebuah [[isotop]] [[rubidium]]. <sup>87</sup>Rb adalah atom pertama dan paling populer untuk membuat [[kondensat Bose–Einstein]] dalam [[Gas|gas atom]] encer. Meskipun <sup>85</sup>Rb lebih melimpah, <sup>87</sup>Rb memiliki panjang hamburan positif, yang berarti saling menolak, pada suhu rendah. Hal ini mencegah runtuhnya semua kondensat kecuali yang terkecil. Ia juga mudah untuk mendinginkan secara evaporatif, dengan hamburan timbal balik yang kuat dan konsisten. Ada juga pasokan [[Dioda laser|laser dioda]] murah yang tidak dilapisi yang biasanya digunakan pada [[Penggerak cakram optis|penulis CD]], yang dapat beroperasi pada panjang gelombang yang benar.

<sup>87</sup>Rb memiliki massa atom 86,9091835 [[Dalton (satuan)|u]], dan energi pengikatan 757.853 [[Elektronvolt|keV]]. Kelimpahan persen atomnya adalah 27,835%, dan memiliki [[waktu paruh]] {{val|4.92|e=10}} tahun.

==Referensi==
{{reflist}}
* Massa isotop dari:
**{{NUBASE 2003}}
* Komposisi isotop dan massa atom standar dari:
**{{CIAAW2003}}
**{{CIAAW 2005}}
* Data waktu paruh, spin, dan isomer dipilih dari sumber-sumber berikut.
**{{NUBASE 2003}}
**{{NNDC}}
**{{CRC85|chapter=11}}

{{Indeks isotop}}

[[Kategori:Isotop rubidium]]
[[Kategori:Rubidium]]
[[Kategori:Daftar isotop menurut unsur|Rubidium]]