Many compounds of the transition metal elements contain direct bonds between metal atoms We will assume that the z axis is defined as the metal metal bond axis (a) Which of the 3d orbitals (Figure 6 23) can be used to make a bond between metal atoms (b) Sketch the 3d bonding and 3d anti bonding MOs (c) With reference to the Closer Look box on the phases of orbitals, explain why a node is generated in the 3d MO (d) Sketch the energy level diagram for the Sc2 molecule, assuming that only the 3d orbital from part (a) is important (e) What is the bond order in Sc2

Question: Many compounds of the transition-metal elements contain direct bonds between metal atoms. We will assume that the z-axis is defined as the metal-metal bond axis.

Many compounds of the transition-metal elements contain direct bonds between metal atoms. We will assume that the z-axis is defined as the metal-metal bond axis.
(a) Which of the 3d orbitals (Figure 6.23) can be used to make a σ bond between metal atoms?
(b) Sketch the σ3d bonding and σ*3d anti-bonding MOs.
(c) With reference to the "Closer Look" box on the phases of orbitals, explain why a node is generated in the σ*3d MO.
(d) Sketch the energy-level diagram for the Sc2 molecule, assuming that only the 3d orbital from part (a) is important.
(e) What is the bond order in Sc2?

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