Margaret Todd (doctor)
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Margaret Georgina Todd was a Scottish medical doctor and writer. She coined the term isotope in 1913 in a suggestion to chemist Frederick Soddy.
Dr Margaret Todd
Isotope
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Isotopes are distinct nuclear species of the same chemical element. They have the same atomic number and position in the periodic table, but different nucleon numbers due to different numbers of neutr
Margaret Todd (doctor)
…Margaret Georgina Todd (23 April 1859 – 3 September 1918) was a Scottish medical doctor and writer. She coined the term isotope in 1913 in a suggestion to chemist Frederick Soddy. Todd was born in Kilrenny, Fife, Scotland, the daughter of James Cameron Todd and Jeannie McBain…
In the bottom right corner of J. J. Thomson's photographic plate are the separate impact marks for the two isotopes of neon: neon-20 and neon-22.