1.

Which of the following configurations are correct in the first excited state?

Answer»

`Cr:[AR]3D^(5)4s^(1)`
`Mn^(2+):[Ar]3d^(5)`
`Fe^(2+):[Ar]3d^(5)4s^(1)`
`Co^(3+):[Ar]3d^(5)4s^(1)`

Solution :`Cr:[Ar]3d^(5)4s^(1)rArr`GROUND state
`Mn^(2+):[Ar]3d^(5)rArr` Ground state
`Fe^(2+):[Ar]3d^(6)rArr` Ground state
`[Ar]3d^(5)4s^(1),rArr` Excited state
`[Co^(3+)] : [Ar]3d^(6)rArr` Ground state,
`[Ar]3d^(5)4s^(1)rArr` Excited state


Discussion

No Comment Found

Related InterviewSolutions