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Polonides
A polonide is a chemical compound of the radioactive element polonium with any Chemical element, element less Electronegativity, electronegative than polonium. Polonides are usually prepared by a direct reaction between the elements at temperatures of around 300–400 °C... They are amongst the most chemically stable compounds of polonium,. and can be divided into two broad groups: *ionic polonides, which appear to contain the Po2− anion; *intermetallic polonides, in which the bonding is more complex. Some polonides are intermediate between these two cases and others are non-stoichiometric compounds. Alloys containing polonium are also classed as polonides. As polonium is immediately below tellurium in the periodic table, there are many periodic table, chemical and structural similarities between polonides and Telluride (chemistry), tellurides. Naturally occurring polonides Lead polonide (PbPo) occurs naturally, as lead is produced in the alpha decay of polonium. Ionic polon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesium Polonide
Magnesium polonide (MgPo) is a salt of magnesium and polonium. It is a polonide, a set of very chemically stable compounds of polonium. Preparation Magnesium polonide can be produced by heating a mixture of elemental magnesium and polonium at 300–400 °C. Structure Magnesium polonide has the nickeline (NiAs) structure. It is unusual among polonides in not being isomorphous with the corresponding sulfide, selenide A selenide is a chemical compound containing a selenium with oxidation number of −2. Similar to sulfide, selenides occur both as inorganic compounds and as organic derivatives, which are called organoselenium compound. Inorganic selenides Th ... and telluride; only mercury polonide (HgPo) shares this property. References {{inorganic-chemistry-stub Magnesium compounds Polonides Nickel arsenide structure type ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
