Actinides electron affinity

Periodic Table of Electron Affinities (kJ/mol) The values listed in parentheses in this periodic table of electron affinities are approximate. Electron affinity is estimated to be —50 kJ/mol for each of the lanthanides and 0 kJ/mol for each of the actinides. 

Explain the important distinctions between each pair of terms (a) actinide and lanthanide element (b) covalent and metallic radius (c) atomic number and effective nuclear charge (d) ionization energy and electron affinity (e) paramagnetic and diamagnetic. 

The alkaline and rare-earth metals, and positive actinide ions, generally have greater affinity for —0 groups as electron donors. Many transition metals complex preferentially with enoHc —0 and some nitrogen functions. PolarizabiUty of the donor atoms correlates with stabiUty of complexes of the heavier transition metals and the more noble metal ions. 

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