CHROME

The chrome is a chemical element of atomic number 24 that is in the group 6 of the periodic table of the elements. His symbol is Cr. It is a metal, hardly, fragile, steely and brilliant grey. Of the Greek khroma, color, for the usefulness that the combinations of the chrome have in painting. Siberia red of lead (crocoíta) is a mineral of chrome estimated as a red pigment for paintings of oil. Emerald is Beryl's form (a silicate of aluminium, beryllium), which is of green color due to the incorporation of a bit of chrome in the network crytal Beryl instead of some of the ions of aluminium.

It was discovered by Vaughlin in 1797.

Information obtained of www.wikipedia.org and www.lennetech.es