Transition Metal

Question 1

What is a TM

Answer 1

D block element that forms ≥ 1 stable ion with partially filled d orbitals

Question 2

How can TM be homogeneous cat

Answer 2

Partially filled d orbitals, variable oxidation states

Question 3

How can TM act as heterogenous cat

Answer 3

Adsorption: Formation of temporary bonds as reactant molecules adsorb onto catalyst surface

Reaction: Reactant molecules brought closer tgt, increasing surface concentration, weakens covalent bonds, lowering Ea

Desorption: Products diffuse away from the surface, active sites available for adsorption of other molecules catalyst regenerated

Question 4

How can TM act as heterogenous cat

Answer 4

Adsorption: Formation of temporary bonds as reactant molecules adsorb onto catalyst surface

Reaction: Reactant molecules brought closer tgt, increasing surface concentration, weakens covalent bonds, lowering Ea

Desorption: Products diffuse away from the surface, active sites available for adsorption of other molecules catalyst regenerated

Question 5

D-d splitting

Answer 5

Ligands approach TM cation eFOA between lone pairs d orbital splitting into 2 energy levels forms energy gap

3dx²-y² and 3dz² higher energy lvl greater repulsion lie along axes