Nickel (Ni)
Nickel is the 28th element, a transition metal in the d-block. Its standard atomic weight is 58.693.
Nickel
58.693
What the table records
- Atomic number
- 28
- Standard atomic weight
- 58.693
- Group
- 10
- Period
- 4
- Block
- d-block
- Category
- Transition metal
- [Ar] 3d8 4s2
- Valence electrons
- 10
- Typical valence
- Van der Waals radius
- 2 Å
- Covalent radius
- 1.24 Å
Molecules containing nickel
The lightest named structures in this library that contain Ni.
Nickel
Ni · 58.69 g/mol
Nickel cation
Ni+2 · 58.69 g/mol
Nickel Dichloride
Cl₂Ni · 129.6 g/mol
Trichloronickel
Cl₃Ni · 165.05 g/mol
Nickel(2+) dibromide
Br₂Ni · 218.5 g/mol
Dichloronickel;1,2-dimethoxyethane
C₄H₁₀Cl₂NiO₂ · 219.72 g/mol
NICKEL(II) CHLORIDE ETHYLENE GLYCOL DIMETHYL ETHER COMPLEX
C₄H₁₀Cl₂NiO₂ · 219.72 g/mol
Nickel(II) Acetylacetonate
C₁₀H₁₄NiO₄ · 256.91 g/mol
Bis(1,5-cyclooctadiene)nickel
C₁₆H₂₄Ni · 275.06 g/mol
Ni(COD)2
C₁₆H₂₄Ni · 275.06 g/mol
NICKEL(II) bromide ETHYLENE GLYCOL DIMETHYL ETHER COMPLEX
C₄H₁₀Br₂NiO₂ · 308.62 g/mol
NICKEL(II) IODIDE
I₂Ni · 312.5 g/mol
How to read these numbers
The standard atomic weight is an average over the isotopes as they occur naturally, which is why it is rarely a whole number. It is the figure a molar mass calculation uses. Work in mass spectrometry wants the monoisotopic mass of a single isotope instead, which is a different number.
The two radii are not the same measurement. The covalent radius is half the distance between two bonded atoms of the element; the van der Waals radius is how close a non-bonded atom gets before repulsion takes over, and is always the larger. Space-filling models are drawn with the second, ball-and-stick models with the first — which is why the same molecule looks so different in the two.