Consider the following six electronic configurations (remaining inner orbitals are completely filled) and mark the incorrect option.

Options

A. Stability order : `II gt I gt IV gt III`
B. Order of spin multiplicity: `IV gt III = I gt II`
C. `V` does not violate all the three rules of electronic configuration
D. If `VI` represents `A` and `A^(+)` when kept near a magnet, acts as diamagnetic substance

Answer

A, B, C

Explanation

A : excitation possible only in d-orbitals
B : Spin multiplicity `=2|S|+1, |S|`
=total spin
C : V violated Hund's rule
D : `A^(+)` is paramagnrtic due unpaired `e^(-)`
`:.` A, B, C are correct.