Chemist no. 306 of 350 · Inorganic

Ralph Pearson

1919-2022United States

Hard and soft acids and bases

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The discovery, explained

Ralph Pearson and the HSAB Principle: "Hard Likes Hard, Soft Likes Soft"

Learn Ralph Pearson's HSAB principle with examples, chemical hardness formula, Fajans link, exam points and FAQs for IIT-JAM, CSIR-NET and GATE.

Publishing soon · 6 min read

Biography

Ralph G. Pearson (1919–2022): A Century of Chemistry and the Idea of Hardness

Biography of Ralph G. Pearson (1919-2022): inorganic reaction mechanisms, HSAB principle, Northwestern and UC Santa Barbara, long career and student lessons.

Publishing soon · 5 min read

Academic lineage

Documented doctoral, postdoctoral and teaching links. Dashed chips are teachers outside the 350 chemists listed here.

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