Choose the INCORRECT statement.
◦ The electron configuration of Fe2+ is [Ar]3d6.
◦ The electron configuration of Co2+ is [Ar]3d7.
◦ The electron configuration of Fe3+ is [Ar]3d5.
◦ The electron configuration of Ni2+ is [Ar]3d5.
◦ A metal carbonyl is a compound formed from a metal and carbon monoxide.