Nickel at Chemical Elements.com 

 

Basic Information


Name: Nickel
Symbol: Ni
Atomic Number: 28
Atomic Mass: 58.6934 amu
Melting Point: 1453.0 °C (1726.15 °K, 2647.4 °F)
Boiling Point: 2732.0 °C (3005.15 °K, 4949.6 °F)
Number of Protons/Electrons: 28
Number of Neutrons: 31
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 8.902 g/cm3
Color: white


Atomic Structure

[Bohr Model of Nickel]  
Number of Energy Levels: 4

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 16
    Fourth Energy Level: 2

Isotopes

Isotope Half Life
Ni-56 6.1 days
Ni-57 35.6 hours
Ni-58 Stable
Ni-59 76000.0 years
Ni-60 Stable
Ni-61 Stable
Ni-62 Stable
Ni-63 100.0 years
Ni-64 Stable
Ni-65 2.51 hours

Facts


Date of Discovery: 1751
Discoverer: Alex Cronstedt
Name Origin: From the German word kupfernickel (false copper)
Uses: electroplating metal alloys, nickel-cadmium batteries
Obtained From: pentlandite