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28 Transition Metal
Ni

Nickel

RIS 0.079
Velocity +0.002
Rank#22
Co-citedCo

Nickel (Ni) is a transition metal with atomic number 28: a neutral nickel atom has 28 protons and 28 electrons. Atomic mass 58.693 u, electron configuration [Ar] 3d8 4s2. Nickel is a versatile transition metal used in stainless steel, coins, and batteries.

Physical properties
Atomic mass 58.693 u
Category Transition Metal
Block d-block
State Solid
Config [Ar] 3d8 4s2
Electronegativity 1.91
Density 8.912 g/cm³
Melting 1728.0 K
Boiling 3186.0 K
Ionization 737.1 kJ/mol
Oxidation +1, +2, +3, +4
Discovered 1751 · Axel Fredrik Cronstedt
Nickel's history

Research intensity over time

Research communities behind this literature

Groups of papers that cite each other densely, with the share of Nickel's tracked research in each.