Nickel
Nickel is a chemical element, the metal is yellowish-white, very solid, is well polished, attracted by a magnet. Known from ancient times. Symbol Ni, atomic number 28; atomic mass 58.70. Density 8.9; melting point 1455 ° C; boiling point 2900 ° C. Formates solid solutions with Fe, Co, Mn, Cu, Pt, Au, Pd, Cr, and others. Clarke in the earth's crust 5.8 • 10-3%.