How many valence electrons are present in chromium?
Answers
Answered by
3
Chromium has six valence electrons. For chromium, the 4s shell is lower on the orbital than the 3d shell. When the electrons are filling up the energy levels, both the 3d shell and the 4s shell have one electron in their orbitals. This is because electrons tend to occupy energy levels that are not already occupied before they start pairing. However, this means that there are valence electrons in both the 3d shell and the 4s shell.
Because we know that there are 5 electrons in the 3d shell and 1 electron in the 4s shell, we can conclude that there is a total of 6 valence electrons for chromium. The electron configuration of chromium is (Ar)4s13d5.
Similar questions