Some possible Revision Notes for the chapter "d & f- block Elements" in Class 12 Chemistry are:
1. Introduction: d-block elements are those which have partially filled d-orbitals whereas f-block elements have partially filled f-orbitals.
2. Electronic Configuration: The general electronic configuration for d-block elements is (n-1) d1-10 ns1-2 and for f-block elements is (n-2) f1-14 (n-1)d0-1 ns2.
3. Electronic Behaviour: d-block elements show variable oxidation states due to the availability of valence electrons in partially filled d-orbitals, whereas f-block elements show very less variation in oxidation states due to the stability of their f-electrons.
4. Actinoids: Actinoids are the f-block elements from atomic number 89-103. They have similar chemical and physical properties due to the similarity in electronic configuration.
5. Lanthanoids: Lanthanoids are the f-block elements from atomic number 57-71. They show gradual variation in chemical and physical properties due to the gradual filling of f-orbitals.
6. Compounds: d-block and f-block elements show several similarities in their chemical properties and form a large number of complex compounds.
7. Magnetic Properties: d and f-block elements have unpaired electrons in their orbitals which makes them paramagnetic in nature.
8. Colour Properties: d and f-block elements exhibit different colours in their compounds due to the characteristic photon wavelengths absorbed or emitted during electronic transitions.
9. Catalytic Properties: d and f-block elements are widely used in industrial catalytic reactions due to their unique chemical properties and availability in nature.
10. Applications: The d-block and f-block elements find varied applications in many fields including metallurgy, medicine, electronics, and material sciences.
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Revision Notes for Coordination Chemistry
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