Element: Nickel (Ni)

Element (Atom) NameNickel
SymbolNi
Physical state at room temperatureSolid
Element ClassificationMetal
Group NameNone
Period Number (Periodic table) 4
Group number (Periodic table)10
Atomic number28
Atomic weight58.6934 (Ref: Jlab-ele028, ciaaw-nickel, Nist-28)
58.69 (Ref: Lanl-28)
Atomic Radius163 pm (Van der Waals) (Ref: Lanl-28)
Density8.912 g/ml (Ref: Jlab-ele028)
Melting point1455°C (Ref: Jlab-ele028, Lanl-28)
Boiling point2913°C (Ref: Jlab-ele028)
2730 °C (Ref: Lanl-28)
Electron shell configuration1s2 
2s2 2p6 
3s2 3p6 3d8 
4s2
Oxidation States+3, +2 (Ref: Jlab-ele028)
4, 3, 2, 1, −1, −2 ​(a mildly basic oxide) (Ref: Lanl-28)
Ionization Energy7.640 eV (Ref: Jlab-ele028)
7.639878  eV (Ref: Nist-28)
Number of Stable Isotopes5
InChIInChI=1S/Ni (Ref: Pubchem-28)
InChI KeyPXHVJJICTQNCMI-UHFFFAOYSA-N (Ref: Pubchem-28)
Remarks 

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