cesio

Also known as Cs, element 55, 55Cs, cæsium, cesium

Cs - elemento chimico con numero atomico 55

OverviewAI-generated

Caesium is a chemical element with the symbol Cs and atomic number 55. It was discovered in 1860. The standard atomic mass of caesium is 132.90545196. Its electron configuration is [Xe] 6s¹. The element typically exhibits an oxidation state of 1.

Caesium has an electronegativity of 0.79 and an ionization energy of 3400. Its Mohs' hardness is 0.2, and its ionic radius is 1.88. The standard molar entropy is 85.2. The canonical SMILES representation is [Cs]. The Unicode character for caesium is 銫.

In chemical databases, caesium is identified by the CID 5354618. Its InChIKey is TVFDJXOCXUVLDH-UHFFFAOYSA-N. The IUPAC name is cesium. It has a topological polar surface area of 0 and no hydrogen bond donors or acceptors. The element is referenced by 1,288 other encyclopedia articles.

Synthesized by Vinony from 28 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.

Key facts

Caesium.engvar: en-OED

via Wikipedia infobox

Chemical data

Formula: Cs
Molecular weight: 132.905452 g/mol
IUPAC name: cesium
SMILES: [Cs]
InChIKey: TVFDJXOCXUVLDH-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Research

20,625 papers

Caesium-137 gamma-ray beams.ReviewBJR supplement · 1996Burns JE
Caesium accumulation by microorganisms: uptake mechanisms, cation competition, compartmentalization and toxicity.ReviewJournal of industrial microbiology · 1995Avery SVDOI: 10.1007/BF01569888
Caesium-134 in man.Nature · 1962LIDEN K, ANDERSSON IODOI: 10.1038/1951040a0
CHARACTERISATION OF RADIOACTIVE CAESIUM IN SEDIMENTS AT THE NOGAWA RIVER, JAPAN.Radiation protection dosimetry · 2022Inose S, Nanri Y, Saito R et al.DOI: 10.1093/rpd/ncac008
INHIBITORY EFFECT OF CALCIUM ON CAESIUM ABSORPTION IN PLANT ROOTS.Radiation protection dosimetry · 2022Kihana M, Yamagami MDOI: 10.1093/rpd/ncac071
CAESIUM RETENTION CHARACTERISTICS OF KNIFC-PAN RESIN FROM RIVER WATER.Radiation protection dosimetry · 2020Hegedűs M, Tazoe H, Yang G et al.DOI: 10.1093/rpd/ncaa109
Simultaneous removal of caesium and strontium using different removal mechanisms of probiotic bacteria.Scientific reports · 2024Endo R, Karasawa S, Aoyagi HDOI: 10.1038/s41598-024-57678-8
Gamma rays: caesium 137 teletherapy units.ReviewThe British journal of radiology · 1972Burns JE

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Wikidata facts

Subclass of: s-block
Part of: alkali metal
Named after: sky blue
Mass: 132.90545196
Image: Cesium.jpg

Show 21 more facts

element symbol: Cs
Commons category: Caesium
discoverer or inventor: Gustav Kirchhoff
topic's main category: Category:Caesium
time of discovery or invention: 1860-01-01
location of discovery: Heidelberg
atomic number: 55
Commons gallery: Caesium
canonical SMILES: [Cs]
chemical formula: Cs
standard molar entropy: 85.2
has characteristic: paramagnetism
oxidation state: 1
ionization energy: 3400
Mohs' hardness: 0.2
Unicode character: 銫
electronegativity: 0.79
different from: cerium
ionic radius: 1.88
electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4d¹⁰ 4p⁶ 5s² 5d¹⁰ 5p⁶ 6s¹
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4

Sources (9)

via Wikidata · CC0

Article · Italiano

Il cesio è l'elemento chimico di numero atomico 55 e il suo simbolo è Cs. È un metallo alcalino di colore argenteo-dorato, tenero e duttile, fonde poco al di sopra della temperatura ambiente. L'uso più importante del cesio è negli orologi atomici.

Abstract from DBpedia / Wikipedia · CC BY-SA