MLX Plots – Taken from http://www.columbia.edu/cu/chemistry/groups/parkin/mlxz.htm

Sc – Early transition metal

Almost always in highest valence state (3)

Not very often 18 electron: atom only has 3 valence electrons, runs out of space to coordinate ligands!!

Group 6 – “Mid” transition metals

Usually 18 electron octahedral (group 6-8 most likely to obey 18e rule)

Most common valence state increases down the triad

MLX Plots – Taken from http://www.columbia.edu/cu/chemistry/groups/parkin/mlxz.htm

Group 10 – “late” transition metals

Usually 16 electron sq planar d8 (dx2-y2 strongly antibonding)

Accessible valence states increase down the triad

MLX Plots – Taken from http://www.columbia.edu/cu/chemistry/groups/parkin/mlxz.htm