The replacement of the nondescript term ‘heavy metals’ by a biologically and chemically significant classification of metal ions

<b>Hard and Soft Acids and Bases</b>

Ralph G. Pearson · Journal of the American Chemical Society · 1963 · 10.2K citations

Natural Sciences, Biochemistry, Chemistry +5

Effective ionic radii in oxides and fluorides

R. D. Shannon, C. T. Prewitt · Acta Crystallographica Section B · 1969 · 8.6K citations

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Handbook of Chemistry and Physics

Journal of AOAC INTERNATIONAL · 1937 · 4.8K citations

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Trace Elements in Human and Animal Nutrition

E. J. UNDERWOOD · Soil Science · 1963 · 4.5K citations · Full text

Agriculture, Nutrition, Nutritional Sciences +14

Hard and soft acids and bases, HSAB, part 1: Fundamental principles

Ralph G. Pearson · Journal of Chemical Education · 1968 · 2.5K citations

Natural Sciences, Biochemistry, Chemistry +7