Element Nickel

Nickel ElementIt is a chemical element with the symbol Ni and atomic number 28.
It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.
Pure nickel, powdered to maximize the reactive surface area, shows a significant chemical activity, but larger pieces are slow to react with air under standard conditions because an oxide layer forms on the surface and prevents further corrosion (passivation).
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 atmosphere.
Nickel is one of four elements (the others are iron, cobalt, and gadolinium) that are ferromagnetic at approximately room temperature. Alnico permanent magnets based partly on Element Nickel are of intermediate strength between iron-based permanent magnets and rare-earth magnets.

Names and Identifiers

Chemical Formula:Ni
CAS:7440-02-0
Molecular Weight:58.692  g/mol
EC Number :231-111-4
MDL Number:MFCD00011137
Color:lustrous, metallic, silvery tinge
Other Names:Niccolum, Nichel, Níquel
PubChem CID:935
IUPAC Name:Nickel
Inchl:InChI=1S/Ni
InChI Key:PXHVJJICTQNCMI-UHFFFAOYSA-N
Canonical SMILES:[Ni]
ICSC Number:0062

Physical & Chemical Properties

Phase:Solid
Density:8.908 g/cm³
Boiling Point:3003 K ​(2730 °C, ​4946 °F)
Melting Point:1728 K ​(1455 °C, ​2651 °F)
Molecular Formula:Ni
Flash Point:n/a
Exact Mass:57.934254
Symbol:Globally Harmonized System of ClassificationGlobally Harmonized System of Classification
Signal Word:Danger
Hazard Statements:H317-H351-H372-H412
Precautionary Statements:P273-P280-P314-P333 + P313
Hazard Codes:Xn
Risk Phrases:R17;R40;R43
Safety Phrases:S26-S45-S60-S61-S36-S22-S36/37-S16-S15-S5
RIDADR:UN 1493 5.1/PG 2
WGK Germany:3
RTECS:VW4725000
Packaging Group:II
Hazard Class:4.1

Naturally occurring nickel is composed of five stable isotopes; 58Ni, 60Ni, 61Ni, 62Ni and 64Ni, with 58 Ni being the most abundant (68.077% natural abundance). Isotopes heavier than 62 Ni cannot be formed by nuclear fusion without losing energy.

Naturally occurring isotopes

IsotopeMass/DaNatural abundance (atom %)Nuclear spin (I)Magnetic moment (μ/μN)
58Ni57.9353462 (16)68.0769 (89)0
60Ni59.9307884 (16)26.2231 (77)0
61Ni60.9310579 (16)1.1399 (6)3/2-0.75002
62Ni61.9283461 (16)3.6345 (17)0
64Ni63.9279679 (17)0.9256 (9)0

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
56Ni55.942146.08 dEC to 56Co0
57Ni56.93980035.6 hEC to 57Co3/20.88
59Ni58.93435176000 yEC to 59Co3/2
63Ni62.929673100 yβ to 63Cu1/2
65Ni64.9300882.517 hβ to 65Cu5/20.69
66Ni65.9291254.6 hβ to 66Cu0

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