Alkaline earths nuclear properties

Its importance depends on the nuclear property of being readily fissionable with neutrons and its availability in quantity. The world s nuclear-power reactors are now producing about 20,000 kg of plutonium/yr. By 1982 it was estimated that about 300,000 kg had accumulated. The various nuclear applications of plutonium are well known. 238Pu has been used in the Apollo lunar missions to power seismic and other equipment on the lunar surface. As with neptunium and uranium, plutonium metal can be prepared by reduction of the trifluoride with alkaline-earth metals. 

The properties of hydrated titanium dioxide as an ion-exchange (qv) medium have been widely studied (51—55). Separations include those of alkaH and alkaline-earth metals, zinc, copper, cobalt, cesium, strontium, and barium. The use of hydrated titanium dioxide to separate uranium from seawater and also for the treatment of radioactive wastes from nuclear-reactor installations has been proposed (56). 

Whereas some interesting 15N-FTNMR complexation studies have been carried out by Roberts (52), more promising results have been obtained from alkali metal NMR (53-57). The nuclear and spectral properties of the alkali and alkaline earth elements are shown in Table... 

Nuclear Properties of Alkali and Alkaline Earth Cations... 

IV. THE ALKALINE EARTH NUCLEI A. Nuclear properties and experimental aspects... 

Hetero-multi-nuclear complexes are obtained easily due to this coordination ability. Lanthanide ions and alkali and alkaline earth metal ions can interact with these oxygen atoms. Metallohosts containing salen analogues for cations are designed and constructed on the basis of these binding properties. 

Topics under the practical importance of the alkaline-earth metals include their significance in living systems, the incidence of beryllium disease, radiochemical applications as components and residues of nuclear power, metallurgical uses in preparing pure metals and alloys, use in fireworks and X-ray technology, the definition and properties of hard water, and the role of calcium phosphate in bone and teeth structure. 

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