File:Thulium_sublimed_dendritic_and_1cm3_cube.jpg · Wikimedia Commons · See Wikimedia Commons
OverviewAI-generated
Thulium is a chemical element with the symbol Tm and atomic number 69. Its IUPAC name is thulium, and it is represented by the chemical formula Tm. The element has a mass of 168.934219 and an ionic radius of 1.09. It possesses an electronegativity of 1. The Unicode character for thulium is 銩.
The element was discovered in 1879. In chemical databases, it is identified by the PubChem CID 23961 and the InChIKey FRNOGLGSGLTDKL-UHFFFAOYSA-N. Its molecular weight is listed as 168.93422. Thulium has zero hydrogen bond donors and acceptors, with a topological polar surface area of 0 and a charge of 0. The canonical SMILES representation is [Tm].
Thulium is referenced by 766 other encyclopedia articles. PubMed contains 2600 records associated with the query thulium. The subject is categorized under the Commons category "Thulium" and has a corresponding gallery.
Synthesized by Vinony from 23 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
- Tm
- Molecular weight
- 168.93422 g/mol
- IUPAC name
- thulium
- SMILES
- [Tm]
- InChIKey
- FRNOGLGSGLTDKL-UHFFFAOYSA-N
- Polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Formal charge
- 0
via PubChem
Research
2,600 papers- Pulsed Thulium:YAG Laser for Lithotripsy.ReviewEuropean urology focus · 2025Hernandez-Gaytan CA, Proietti S, Leonardis F et al.DOI: 10.1016/j.euf.2025.06.002
- Thulium Fiber Versus Holmium:Yttrium-aluminum-garnet Laser for Endoscopic Enucleation of the Prostate: A Systematic Review and Meta-analysis.European urology focus · 2024Uleri A, Long Depaquit T, Farré A et al.DOI: 10.1016/j.euf.2024.06.005
- Thulium fiber laser in urology: physics made simple.ReviewCurrent opinion in urology · 2022Taratkin M, Azilgareeva C, Cacciamani GE et al.DOI: 10.1097/MOU.0000000000000967
- [Thulium or holmium laser or both: where will the journey take us?].ReviewAktuelle Urologie · 2024Becker B, Hook S, Gross AJ et al.DOI: 10.1055/a-2286-1379
- Thulium Fiber Laser Behavior on Tissue During Upper- and Lower-Tract Endourology.ReviewCurrent urology reports · 2022Gkolezakis V, Rice P, Somani BK et al.DOI: 10.1007/s11934-022-01117-6
- Thulium fibre laser lithotripsy, the new standard?BJU international · 2023Grasso M 3rdDOI: 10.1111/bju.15943
- Thulium fiber laser utilization in urological surgery: A narrative review.ReviewInvestigative and clinical urology · 2021Khusid JA, Khargi R, Seiden B et al.DOI: 10.4111/icu.20200467
- Thulium fiber laser: the new player for kidney stone treatment? A comparison with Holmium:YAG laser.ReviewWorld journal of urology · 2020Traxer O, Keller EXDOI: 10.1007/s00345-019-02654-5
via PubMed
Wikidata facts
- Instance of
- chemical element
- Part of
- period 6
- Named after
- Scandinavia
- Mass
- 168.934219
- Image
- Thulium sublimed dendritic and 1cm3 cube.jpg
Show 15 more facts
- Commons category
- Thulium
- discoverer or inventor
- Per Teodor Cleve
- topic's main category
- Category:Thulium
- element symbol
- Tm
- atomic number
- 69
- Commons gallery
- Thulium
- described by source
- Granat Encyclopedic Dictionary
- ionic radius
- 0.99
- canonical SMILES
- [Tm]
- chemical formula
- Tm
- time of discovery or invention
- 1879-00-00
- electronegativity
- 1
- Unicode character
- 銩
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- topic has template
- Template:Infobox thulium
via Wikidata · CC0
Article · 日本語
ツリウム (英: thulium [ˈθjuːliəm]) は原子番号69の元素。元素記号は Tm。ランタノイド系列の13番目の元素である。他のランタノイドと同様に、もっとも一般的な酸化数は+3であり、酸化物、ハロゲン化物などの化合物で見られる。ただし、系列の後半であるため、+2の酸化数も結果生じるほぼ完全な4f殻によっても安定化される。水溶液中では、ほかの後半のランタノイドの化合物と同様に、可溶性のツリウム化合物は9つの水分子と錯体を形成する。 1879年、スウェーデンの化学者ペール・テオドール・クレーベは希土類酸化物であるエルビアからそれまで知られていなかった2つの成分を分離し、これをとツリアと呼んだ。これらはそれぞれホルミウムとツリウムの酸化物である。ツリウム金属の比較的純粋な試料は、1911年に初めて得られた。 地球上で微量にしか見られない放射能的に不安定なプロメチウムに次いで、ランタノイドで2番目に少ない元素である。加工が簡単な金属で、明るく銀灰色の光沢がある。かなり柔らかく空気中でゆっくりと変色する。高価で希少であるにもかかわらず、持ち運びできるX線装置や一部の固体レーザーの放射線源として使用されている。生物学的に重要な役割はなく、特に毒性はない。
Abstract from DBpedia / Wikipedia · CC BY-SA
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