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Also known as Rb, element 37, 37Rb

Rubidium is a chemical element; it has symbol Rb and atomic number 37. It is a very soft, whitish-grey solid in the alkali metal group, similar to potassium and caesium. Rubidium is the first alkali metal in the group to have a density higher than water. On Earth, natural rubidium comprises two isotopes: 72% is a stable isotope Rb, and 28% is slightly radioactive Rb, with a half-life of 48.8 billion years – more than three times as long as the estimated age of the universe.

OverviewAI-generated

Rubidium is a chemical element with the symbol Rb and atomic number 37. It was discovered in 1861. The element has a mass of 85.4678 and an electronegativity of 1. Its electron configuration is [Kr] 5s¹, and it typically exhibits an oxidation state of 1. The ionic radius of rubidium is 1.72, and its standard molar entropy is 69.5.

The IUPAC name for the element is rubidium. Its chemical formula is listed as Rb. In Unicode, the character for rubidium is 銣. The canonical SMILES representation is [Rb]. The PubChem identifier for the substance is 5357696, and it has a molecular weight of 85.468. It has zero hydrogen bond donors and acceptors, with a topological polar surface area of 0. References to rubidium appear in 9055 PubMed records and are cited by 967 other encyclopedia articles.

Synthesized by Vinony from 26 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula: Rb
Molecular weight: 85.468 g/mol
IUPAC name: rubidium
SMILES: [Rb]
InChIKey: IGLNJRXAVVLDKE-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Research

9,055 papers

Rubidium: overview and clinical perspectives.ReviewModern problems of pharmacopsychiatry · 1982Fieve RR, Jamison KRDOI: 10.1159/000406241
Rubidium Chloride Increases Life Span Through an AMPK/FOXO-Dependent Pathway in Caenorhabditis elegans.The journals of gerontology. Series A, Biological sciences and medical sciences · 2022Hao M, Zhang Z, Guo Y et al.DOI: 10.1093/gerona/glab329
Striving to improve (82)Rubidium PET MPI accuracy.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2019Rimoldi ODOI: 10.1007/s12350-018-1419-0
Rubidium, salami and depression. You cannot have everything in life.Blood purification · 2008Canavese C, Decostanzi E, Bergamo D et al.DOI: 10.1159/000129657
Amniotic fluid rubidium concentration association with newborn birthweight: a maternal-neonatal pilot study.American journal of obstetrics & gynecology MFM · 2023Ovadia YS, Dror I, Liberty G et al.DOI: 10.1016/j.ajogmf.2023.101149
Blood rubidium level in patients with major affective disorders.ReviewGeneral pharmacology · 1987Malek-Ahmadi P, Adams MKDOI: 10.1016/0306-3623(87)90001-2
[New vistas on rubidium].ReviewL'Encephale · 1977
Rubidium: a companion of potassium or an essential trace element of its own?ReviewBeitrage zur Infusionstherapie = Contributions to infusion therapy · 1991Selin E, Teeyasoontranont V

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