Based on concepts from both crystal field theory and valence bond theory, the most likely combination of molecular orbital, magnetic and geometric descriptions for the [Fe(H2O)6]2+ ion is ________.
◦ sp2d/diamagnetic/square planar
◦ sp2d/paramagnetic/square planar
◦ sp3d2/diamagnetic/octahedral
◦ sp3d2/paramagnetic/octahedral
◦ sp2d/paramagnetic/tetrahedral