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Paramagnetism: Compounds Vials of a number of compounds (NaCl, MnSO4, FeSO4, CoCl2, NiSO4, ZnSO4, K4Fe(CN)6, [Co(NH3)6]Cl3, [Ni(NH3)6]Cl2, and H2O) are hung from a thread. When a magnet is brought near, some of the vials are attracted.
Magnetic Properties |
Atomic Properties / Structure
Paramagnetism: Oxidation States of Manganese Manganese(III) oxide, with 4 unpaired electrons per Mn atom, is more strongly attracted to a magnet than is manganese(IV) oxide, with only 3 unpaired electrons per Mn atom. Potassium permanganate, a compound of Mn(VII), has no unpaired electrons and is not attracted to a magnet.
The Place of Zinc, Cadmium, and Mercury in the Periodic TableWilliam B. Jensen Explanation for why the zinc group belongs with the main group elements; includes several versions of periodic tables. Jensen, William B. J. Chem. Educ.2003, 80, 952.
Periodicity / Periodic Table |
Main-Group Elements |
Transition Elements |
Descriptive Chemistry |
Atomic Properties / Structure
Response to Lowe's Potential-Energy-Only ModelsLowe, John P. Discussion of the suitability of a potential-only model for the successive ionization energies of sulfur for an introductory chemistry course. Lowe, John P. J. Chem. Educ.2002, 79, 430.
