What is the electron configuration for chromium?

Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is steely grey and metal. In the US, trivalent chromium ion is considered an essential nutrient in humans for insulin, sugar, and lipid metabolism. It is known for its magnetic properties. It is only elemental solid which slows down antiferromagnetic ordering at room temperature.

It is the 22nd most abundant element in Earth's crust with an average concentration of 100ppm. Chromium compounds are found in the erosion of chromium-containing rocks and can be redistributed by volcanic eruptions. Chromium is mined as chromite (FeCrtwo 0 four) ore. The electron configuration for chromium is {Ar}3d54s.

The correct answer to the question “What is the electron configuration for chromium?” is letter B or 1s2 2s2 2p6 3s2 3p6 421 3d5. The actual electron configuration of Cr is [AR] 4s1 3d4 and Cu is [Ar] 4s1 3d10. Now, Letter A or 1s2 2s2 2p6 3s2 3p6 4s2 3d4 is the expected electronic configuration of a chromium since it has 24 electrons.

However, because of either the orbital stability or the stability of having two full orbitals instead of having one full and another almost half full, we find the correct configuration to be letter B. This answer may be expanded with a little more research about the configuration for chromium, but this answer will serve as just a basic information for all other necessary information about chromium.