Nickel

Koushik 26/06/2026 19:58:08 Updated 26/06/2026 19:58:08
Property Value
Atomic Number 28
Element Nickel
Symbol Ni
Atomic Mass 58.693 u
Number of Neutrons 31 (most common isotope, Nickel-59/58*)
Number of Protons 28
Number of Electrons 28
Period 4
Group 10
Phase Solid
Radioactive No
Natural Yes
Metal Yes
Nonmetal No
Metalloid No
Type Transition Metal
Atomic Radius 149 pm
Electronegativity 1.91 (Pauling scale)
First Ionization Energy 7.640 eV
Density 8.908 g/cm³
Melting Point 1455 °C
Boiling Point 2913 °C
Number of Isotopes 5 stable (Ni-58, Ni-60, Ni-61, Ni-62, Ni-64)
Discoverer Axel Fredrik Cronstedt
Year 1751
Specific Heat 0.444 J/g·K
Number of Shells 4
Number of Valence Electrons 10
Tags: Tutorials Chemistry tutorial step by step learn how to guide examples
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