Question

5 physical properties of cobalt​

Answer 1

Answer:

Explanation:

Cobalt has a melting point of 1495°C, boiling point of 2870°C, specific gravity of 8.9 (20°C), with a valence of 2 or 3. Cobalt is a hard, brittle metal. It is similar in appearance to iron and nickel. Cobalt has a magnetic permeability around 2/3 that of iron.Jul 3, 2019

Appearance: Hard, ductile, lustrous bluish-gray ...

Melting Point (K): 1768

Boiling Point (K): 3143

Atomic Weight: 58.9332

Cobalt is a brittle, hard, silver-grey transition metal with magnetic properties similar to those of iron (it is ferromagnetic). It has a high melting point and is hard-wearing even at high temperatures. Its alloys also possess useful properties and so it finds use in high speed steels and cutting tools for instance.