d and f BLOCK ELEMENTS Quiz

• Large atomic radii of transition metals
• Weak metallic bonding
• Small atoms can fit into the holes in the close-packed metal lattice
• High reactivity with halogens

• It is the only stable oxidation state
• It results from losing all 4f electrons
• It corresponds to the stable electronic configuration after losing 6s and one 5d or 4f electron
• It is required for forming binary compounds

• Oxidation of alcohols
• Hydrogenation of alkenes
• Polymerization of ethylene to polythene
• Dehydration of alcohols

• To reduce chromium to elemental form
• To remove iron as a pure metal
• To oxidize chromium from +3 to +6 oxidation state
• To form a simple salt without changing oxidation states

• Large ionic radii
• High electronegativity
• Availability of partially filled or empty d orbitals to accept electron pairs
• Low ionization energies