Symbol: Ni
Atomic Number: 28
Atomic Weight: 58.6934
Element Classification: Transition Metal
Discovered By: Axel Cronstedt
Discovery Date: 1751 (Sweden)
Name Origin: German: kupfernickel (devil's copper).
Density (g/cc): 8.902
Melting Point (K): 1726
Boiling Point (K): 3005
Appearance: Hard, malleable, silvery-white metal
Atomic Radius (pm): 124
Atomic Volume (cc/mol): 6.6
Covalent Radius (pm): 115
Ionic Radius: 69 (+2e)
Specific Heat (@20°C J/g mol): 0.443
Fusion Heat (kJ/mol): 17.61
Evaporation Heat (kJ/mol): 378.6
Thermal Conductivity (@25°C W/m K):
Debye Temperature (K): 375.00
Pauling Negativity Number: 1.91
First Ionizing Energy (kJ/mol): 736.2
Oxidation States: 3, 2, 0
Electronic Configuration: [Ar] 3d⁸ 4s²
Lattice Structure: Face-Centered Cubic (FCC)
Lattice Constant (Å): 3.520
Lattice C/A Ratio: n/a