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The d- and f-block elements, comprising transition metals and inner transition metals, are characterized by their unique electronic configurations, variable oxidation states, and metallic properties. Comprised of the elements from Groups 3-12 (d-block) and the lanthanides and actinides (f-block), these metals demonstrate significant trends in their physical and chemical behaviors, including high tensile strength, conductivity, and catalytic activity. The chapter further explores the preparation and properties of notable compounds such as potassium dichromate and permanganate, as well as the significance of lanthanoid and actinoid contractions.
Chapter 430 sections
The d- and f-block elements, comprising transition metals and inner transition metals, are characterized by their unique electronic configurations, variable oxidation states, and metallic properties. Comprised of the elements from Groups 3-12 (d-block) and the lanthanides and actinides (f-block), these metals demonstrate significant trends in their physical and chemical behaviors, including high tensile strength, conductivity, and catalytic activity. The chapter further explores the preparation and properties of notable compounds such as potassium dichromate and permanganate, as well as the significance of lanthanoid and actinoid contractions.
The electronic configurations of d-block elements involve progressive filling of d orbitals.
Transition metals exhibit variable oxidation states due to their partially filled d orbitals.
Lanthanoid contraction leads to similar ionic sizes among heavy transition metals and results in unique chemical properties.
Elements that have partially filled d orbitals and exhibit properties such as variable oxidation states and catalytic activity.
The gradual decrease in ionic and atomic sizes from lanthanum to lutetium due to ineffective shielding of the nuclear charge by 4f electrons.
The distribution of electrons in an atom's orbitals, which determines the element's chemical properties and reactivity.
Total Questions
2
Estimated Time
4 min
Passing Score
70%
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