Which is most probably the ground state electron configuration for the iron(III)ion? A)[Ar]4s²3d³ B)[Ar]4s¹3d⁴ C)[Ar]4s⁰3d³3p³ D)[Ar]4s⁰4p⁵ E)[Ar]4s⁰3d⁵

Question

Quizplus · Accepted Answer

Iron(III) ion has lost three electrons from its neutral state configuration which is [Ar]4s2 3d6. Therefore, the remaining electrons are now distributed among the available subshells as follows: [Ar] 3d5. Since the ion has a +3 charge, three electrons must be removed from this configuration. Thus, the ground state electron configuration for the iron(III) ion is [Ar]3d5. Option E is the only one that includes this configuration.

Which Is Most Probably the Ground State Electron Configuration for the Iron(III)ion