By Deanna Deiter

The physical properties are Cobalt is a brittle hard silver-grey transition metal with magnetic properties simiar to those of iron it has a high melting point and is hard wearing even at high temperatures. A cobalt is a solid at room temperature it is 22 degrees.The hardness of a cobalt is 5 out of 10.The density is 8.9 grams per cubic centimeter.The malleability is 6%.