Chromium, Cr
Chromium is a metal in group VIB of the periodic table with atomic number 24, an atomic weight of 51.996, and a density of 7.19. It has a melting temperature of 1875 C.

The electronic configuration for chromium is: (Ar)(3d)5(4s)1, and it has an atomic radius of 0.130 nm.

At room temperature Chromium has a bcc (body-centered-cubic) crystal structure with a basis of one Cr atom. The unit cell is illustrated.

E = 248 GPa. 

From: Callister, 
"Materials Science and Engineering,"
Wiley (1997)