Analyzing the reactivity of transitional metal nitrides, researchers concluded that nitrides can be produced by the direct action of Nitrogen (N) on the metal when the small N atoms, which satisfy the empirical Hagg rule of 0.59 ratio between non-metal/metal atom radii , will occupy the octahedral spaces in the body-centered cubic (BCC) Chromium (Cr) lattice and that the formed interstitial compound is influenced by the electrons in the metal's outer shell . As such, having five electrons in the three-dimensional shell, Cr will form two nitrides: Chromium nitride (CrN) and Dichromium nitride (Cr2N). The resulting alloy inherits most of the base metal properties. Moreover, metal-nonmetal bonds are formed due to the presence of N atoms in the Cr lattice and the connection is partly ionic due to the difference in electro-negativity between the two elements . The resulting CrN has a higher melting point than the base metal, increased hardness, and retains the chemical stability of the base metal .