イットリウム

Also known as Y, element 39, 39Y

原子番号39の元素

OverviewAI-generated

Yttrium is a chemical element with the symbol Y and atomic number 39. Its standard atomic weight is 88.90584. The element has an electron configuration of [Kr] 4d¹ 5s² and typically exhibits an oxidation state of 3. It possesses an electronegativity of 1 and an ionic radius of 1.08. The canonical SMILES representation for yttrium is [Y].

The substance was discovered in 1787. It has a density of 4.47, a melting point of 2732, and a boiling point of 5301. Its vapor pressure is recorded as 0. Yttrium is associated with the Commons category "Yttrium" and the Unicode character "釔". It is referenced by 878 other encyclopedia articles and has a PubChem CID of 23993.

Synthesized by Vinony from 32 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: Y
Molecular weight: 88.90584 g/mol
IUPAC name: yttrium
SMILES: [Y]
InChIKey: VWQVUPCCIRVNHF-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Research

16,456 papers

Yttrium 90 Therapy: Is the Future Surgical?Cardiovascular and interventional radiology · 2020Garlipp BDOI: 10.1007/s00270-020-02645-9
The use of yttrium in medical imaging and therapy: historical background and future perspectives.ReviewChemical Society reviews · 2020Tickner BJ , Stasiuk GJ , Duckett SB et al.DOI: 10.1039/c9cs00840c
Biokinetics of yttrium and comparison with its geochemical twin holmium.ReviewJournal of radiological protection : official journal of the Society for Radiological Protection · 2017Leggett RDOI: 10.1088/1361-6498/aa6e66
Yttrium aluminum garnet-based filler resin composites used as clear aligner attachments.Dental materials journal · 2023Yang H, Li X, Xie X et al.DOI: 10.4012/dmj.2022-157
RADIOACTIVE YTTRIUM 90: A REVIEW OF ITS PROPERTIES, BIOLOGICAL BEHAVIOR, AND CLINICAL USES.ReviewActa radiologica: therapy, physics, biology · 1964WALKER LADOI: 10.1080/02841866409134063
Yttrium nitrate activates the oxidative stress-mediated NF-κB pathway to induce testicular inflammatory response and reduce sperm quality in mice.Ecotoxicology and environmental safety · 2025Zhang SF, Li N, Liu DL et al.DOI: 10.1016/j.ecoenv.2025.118720
Transarterial Radioembolization with Yttrium-90 for the Treatment of Hepatocellular Carcinoma.ReviewAdvances in therapy · 2016Kallini JR, Gabr A, Salem R et al.DOI: 10.1007/s12325-016-0324-7
Yttrium recovery from primary and secondary sources: a review of main hydrometallurgical processes.ReviewWaste management (New York, N.Y.) · 2014Innocenzi V, De Michelis I, Kopacek B et al.DOI: 10.1016/j.wasman.2014.02.010

via PubMed

Wikidata facts

Instance of: lithophile
Subclass of: transition metal
Part of: group 3
Named after: Ytterby mine
Material used: adamsite-(Y)
Mass: 88.905838
Image: Yttrium sublimed dendritic and 1cm3 cube.jpg

Show 25 more facts

topic's main category: Category:Yttrium
atomic number: 39
element symbol: Y
Commons category: Yttrium
discoverer or inventor: Friedrich Wöhler
NIOSH Pocket Guide ID: 0673
density: 4.47
time of discovery or invention: 1787-00-00
immediately dangerous to life or health: 500
Commons gallery: Yttrium
melting point: 2732
boiling point: 5301
vapor pressure: 0
described by source: Encyclopædia Britannica 11th edition
time-weighted average exposure limit: 1
canonical SMILES: [Y]
chemical formula: Y
location of discovery: Finland
electronegativity: 1
Unicode character: 釔
different from: ITR
ionic radius: 1.08
electron configuration: [Kr] 4d¹ 5s²
oxidation state: 3
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4

Sources (9)

via Wikidata · CC0

Article · 日本語

イットリウム（ラテン語: yttrium 英語発音: [ˈɪtriəm]）は、原子番号39の元素である。元素記号はYである。単体は軟らかく銀光沢をもつ金属である。遷移金属に属すがランタノイドと化学的性質が似ているので希土類元素に分類される。唯一の安定同位体89Yのみ希土類鉱物中に存在する。単体は天然には存在しない。 1787年にがスウェーデンのイッテルビーの近くで未知の鉱物を発見し、町名にちなんで「イッテルバイト」と名づけた。ヨハン・ガドリンはアレニウスの見つけた鉱物からイットリウムの酸化物を発見し、アンデルス・エーケベリはそれをイットリアと名づけた。1828年にフリードリヒ・ヴェーラーは鉱物からイットリウムの単体を取り出した。イットリウムは蛍光体に使われ、赤色蛍光体はテレビのブラウン管ディスプレイやLEDに使われている。ほかには電極、電解質、電気フィルタ、レーザー、超伝導体などに使われ、医療技術にも応用されている。イットリウムは生理活性物質ではないが、その化合物は人間の肺に害をおよぼす。

Abstract from DBpedia / Wikipedia · CC BY-SA