Cobalt Metal Broken Cathode /Cathodes 125 grams Purity 99.98

Description

Cobalt Cathode or Broken Cathodes 99.98% Purity Cobalt Cobalt is a brittle, hard, transition metal with magnetic properties similar to those of iron. Cobalt is present in meteorites. Cobalt is used in the preparation of magnetic, wear-resistant, strength at high temperature, and high-strength alloys. Cobalt blue (cobalt(II) aluminate, CoAl2O4) gives a distinctive deep blue color to glass, ceramics, inks, paints, and varnishes. Symbol: Co (Cobalt) Atomic Number: 27 Atomic Weight: 58.9332 Element Classification: Transition Metal Discovered By: George Brandt Discovery Date: 1739 (Sweden) Name Origin: German: kobold (goblin). Density (g/cc): 8.9 Melting Point (°K): 1768 Boiling Point (°K): 3143 Appearance: Hard, ductile, lustrous bluish-gray metal Atomic Radius (pm): 125 Atomic Volume (cc/mol): 6.7 Covalent Radius (pm): 116 Ionic Radius: 63 (+3e) 72 (+2e) Specific Heat (@20°C J/g mol): 0.456 Fusion Heat (kJ/mol): 15.48 Evaporation Heat (kJ/mol): 389.1 Thermal Conductivity (@25°C W/m K): Debye Temperature (°K): 385.00 Pauling Negativity Number: 1.88 First Ionizing Energy (kJ/mol): 758.1 Oxidation States: 3, 2, 0, -1 Electronic Configuration: [Ar] 3d7 4s2 Lattice Structure: Hexagonal (HEX) Lattice Constant (Å): 2.510 Lattice C/A Ratio: n/a