Question

explain why the valance configuration of ground state of a v+ ion is likely to be 3d34s1 rather than 3d44s2​

Answer 1

Answer:

Electronic configuration of Cr is [Ar]3d5 4s1, instead of the expected [Ar]3d4 4s2. This is so because half filled d orbitals have extra stability. So in case of Cr, one electron from the 4s orbital goes to the 3d orbital to make it half filled, and Cr attains extra stable state.18-Dec-2018