Chromium is a chemical element with symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.

Atomic Weight:  51.9961
Density:        7.19 g/cm3
Melting Point:  1907 °C
Boiling Point:  2671 °C