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nickel

Also known as Ni, element 28, ₂₈Ni

Nickel is a chemical element; it has symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive, but large pieces are slow to react with air under standard conditions because a passivation layer of nickel oxide that prevents further corrosion forms on the surface. Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth's atm

AI overview

Nickel is a silvery-white metal that is hard, ductile, and resistant to corrosion due to a protective oxide layer that forms on its surface. It matters because it is rarely found in pure form on Earth and has useful properties that make it valuable for industrial and manufacturing applications.

AI-generated from the Wikipedia summary — may contain errors.

Chemical data

Formula: Ni
Molecular weight: 58.693 g/mol
IUPAC name: nickel
SMILES: [Ni]
InChIKey: PXHVJJICTQNCMI-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Research

74,562 papers

Nickel.ReviewJournal of toxicology. Clinical toxicology · 1999Barceloux DGDOI: 10.1081/clt-100102423
Nickel allergy and allergic contact dermatitis: A clinical review of immunology, epidemiology, exposure, and treatment.ReviewContact dermatitis · 2019Ahlström MG, Thyssen JP, Wennervaldt M et al.DOI: 10.1111/cod.13327
Nickel: Human Health and Environmental Toxicology.ReviewInternational journal of environmental research and public health · 2020Genchi G, Carocci A, Lauria G et al.DOI: 10.3390/ijerph17030679
Nickel-binding proteins.ReviewCellular and molecular life sciences : CMLS · 1999Wattt RK, Ludden PWDOI: 10.1007/s000180050456
Moving nickel along the hydrogenase-urease maturation pathway.ReviewMetallomics : integrated biometal science · 2022Tsang KL, Wong KBDOI: 10.1093/mtomcs/mfac003
Nickel-related hypersensitivity reactions following endovascular interventions: A review of current evidence.ReviewScience progress · 2023Tjen VH, Yang PZDOI: 10.1177/00368504231200626
Nickel and human health.ReviewMetal ions in life sciences · 2013Zambelli B, Ciurli SDOI: 10.1007/978-94-007-7500-8_10
Nickel impact on human health: An intrinsic disorder perspective.ReviewBiochimica et biophysica acta · 2016Zambelli B, Uversky VN, Ciurli SDOI: 10.1016/j.bbapap.2016.09.008

via PubMed

Wikidata facts

Mass: 58.6934
Image: Raflinoer32-Museum Geologi-Nikel.jpg

Show 18 more facts

Unicode character: 鎳
element symbol: Ni
Commons category: Nickel
atomic number: 28
electronegativity: 1.91
oxidation state: 4
NIOSH Pocket Guide ID: 0445
density: 8.90
immediately dangerous to life or health: 10
Commons gallery: Nickel
melting point: 1455
boiling point: 2913
vapor pressure: 0
time-weighted average exposure limit: 1
chemical formula: Ni
canonical SMILES: [Ni]
time of discovery or invention: 1751-00-00
ionic radius: 0.56

Sources (7)

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~35 min read

Article

27 sections

Contents

Properties
Atomic and physical properties
Electron configuration dispute
Isotopes
Occurrence
Compounds
Nickel(0)
Nickel(I)
Nickel(II)
Nickel(III) and (IV)
Hexavalent nickel
History
Coinage
Canada
Switzerland
United Kingdom
United States
Current use
World production
Production
Mond process
Market value
Applications
Biological role
Toxicity
References
External links

Meteoric nickel is found in combination with iron, a reflection of the origin of those elements as major end products of supernova nucleosynthesis. An iron–nickel mixture is thought to compose Earth's outer and inner cores.