31. Transition Elements 1 [2021] J2 CHEM MOVIES
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31. Transition Elements 1 [2021]

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31. Transition Elements 1 [2021]

Overview

1. 31. Transition Elements 1 [2021]

Key Concepts for Transition Elements: 1. Definition of TE (Sc and Zn are not considered to be TE) 2. Physical Properties: Ionisation Energy increases very gradually (relatively invariant) from Sc to Zn Atomic Radius decreases slightly (relatively constant) from Sc to Zn High melting points Good conductor of electricity High densities 3. Chemical Properties: Variable Oxidation States (lower OS usually in ionic compounds and higher OS in covalent compounds) TE are good reducing agents while oxo-anions of TE are good oxidising agents Catalytic Activity (both homogenous and heterogeneous catalysts) Complex formation (cationic, neutral and anionic) Ligand Exchange Reactions