Nickel is a metallic chemical element in the periodic table that has the symbol Ni and atomic number 28.
Nickel is a silvery white metal that takes on a high polish.
It belongs to the iron group, and is hard, malleable, and ductile.
It occurs combined with sulfur in millerite, with arsenic in the mineral niccolite, and with arsenic and sulfur in nickel glance.
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