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A particularly simple two-parameter scaling relation for the variation of the bulk modulus of solids with changing density has been found. The relation, although empirical, fits all metals and metal alloys tested, and also fits semiconductors, ionic crystals, and, with a lesser degree of success, organic compounds. The two parameters seem to be related to the rupture strength and the electronegativity of the solid.
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Brian W. Dodson (1987) studied this question.
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