Tag: #Frederick Soddy

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Frederick Soddy, “The Origins of the Concepts of Isotopes”, NOBEL PRIZE LECTURE, 12 November 1922, PART TWO (II).

The 80 elements’ with one or more stable isotopes comprise a total of 251 isotopes that have not been known to decay using current equipment.   Stable isotopes:   Continue reading Frederick Soddy, “The Origins of the Concepts of Isotopes”, NOBEL PRIZE LECTURE, 12 November 1922, PART TWO (II).

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Frederick Soddy, “The Origins of the Concepts of Isotopes”, NOBEL PRIZE LECTURE, 12 November 1922.

Dmitri Mendeleev (1834 – 1907) Дмитрий Менделеев, “Principles of Chemistry”, 1868 was the topic of an earlier blog post. Here I present: Frederick Soddy, (1877-1956) “The Origins of the Concept of Isotopes”, NOBEL PRIZE LECTURE, 12 November 1922. Summary. The Scottish doctor/writer Margaret Todd (1859-1918) coined the term “isotope” in a suggestion to Frederick Soddy … Continue reading Frederick Soddy, “The Origins of the Concepts of Isotopes”, NOBEL PRIZE LECTURE, 12 November 1922.