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 ...

The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...

A depiction of the crystal structure of chromium triiodide (CrI3), with chromium atoms shown in purple and iodine atoms in yellow. The black arrows represent the electron "spins," which are ...

One feature of compounds made with transition metals is their intense colour. There are many examples in nature, including ...

Both rubies and emeralds are minerals, which is a type of rock with a consistent chemical composition and a highly ordered ...

Duwez, P., and Baen, S. R., A.S.T.M. Preprint 47 (1950). See also Pietrokowsky, P., and Duwez, P., J. Metals, 188, 1283 (1950).

The striking red color of rubies is due to chromium (Cr) ions, which replace a small number of aluminum ions within the crystal structure. When chromium ions are present, they alter the way the ...