1372 Lec 13Sep2011 - 1 General Chemistry 4th edition Hill...

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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 1
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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 2 Diamagnetism is the weak repulsion associated with paired electrons. (all e- paired) Paramagnetism is the attraction associated with unpaired electrons. (one or more unpaired e-) This produces a much stronger effect than the weak diamagnetism of paired electrons. Ferromagnetism is the exceptionally strong attractions of a magnetic field for iron and a few other substances. Magnetic Properties
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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 3
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General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry 4 Half the distance between the nuclei of two atoms is the atomic radius. Covalent radius : half the distance between the nuclei of two identical atoms joined in a molecule . (use this for non-metals) Metallic radius : half the distance between the nuclei of adjacent atoms in a solid metal . (use this for metals) Periodic Properties: Atomic Radius I 2
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