Why does Mn form compounds with higher oxidation states than Cr?
Solution 63E:Mn is the chemical name of Manganese and has atomic number 25. Cr is the chemical name ofChromium and has atomic number 24.Oxidation state is also called as Oxidation number. It is the total number of electrons that anatom either gains or loses in order to form a chemical bond with another atom.Electron configuration describes the distribution of electrons among different orbitals (includingshells and subshells) within atoms and molecules.The electron configuration for manganese is 1s 2s 2p 3s 3p 4s 3d . It can be shortened to 6 2 5[Ar] 4s 3d , where the [Ar] represents argon, the last element in the third row of the periodictable, whose electrons fill every shell prior to the 4s-orbitalThe electron configuration of chromium is 1s 2s 2p 3s 3p 3d 4s . It can be shorted to6 5 1[Ar] 4s 3d . The symbol [Ar] in the electron configuration stands for argon, which has a stableelectron configuration. Chromium has six valence electronsMn has one more electron orbital available for bonding than chromium, hence it formscompound with higher oxidation states.