Magnesium atom, relative weight

Equal volumes of some metals also reflect the relative weight of their atoms. Cubes of magnesium, iron, lead, and uranium, for instance, will hang at different heights when attached to similar springs. 

Analyses of electron density distributions have enabled the positions of major elements of high atomic weights such as iron and other transition elements to be located relative to lighter elements such as magnesium and aluminium in mineral crystal structures. The widespread availability of automated X-ray dif-fractometry and least squares refinement programs have increased the availability of site occupancy data for transition metal ions in most contemporary crystal structure refinements. 

The key to the partitioning of thorium in the described conceptual flow sheet is the solubility in cadmium-magnesium. Experimental data associated with this problem have been obtained. The weight percent thorium in solution was determined by taking samples of the equilibrated liquid at varying temperatures and alloy compositions. The samples were analyzed for thorium, magnesium, and cadmium using atomic absorption spectroscopy and the results are estimated to have a relative accuracy of 3%. 

Magnesium and aluminum are attractive candidates for use as anode materials in primary batteries. As shown in Table 1.1, Chap. 1, they have a high standard potential. Their low atomic weight and multivalence change result in a high electrochemical equivalence on both a gravimetric and a volumetric basis. Further, they are both abundant and relatively inexpensive. 

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