Dr John Arnold Cranston FRSE FRIC LLD (15 August 1891 – 25 April 1972) was a Scottish research chemist. He is credited with the development of isotopes and also the co-discovery of protactinium (element 91). However this credit was claimed by others, not himself directly, and only caused controversy in the scientific world after the publishing of his obituary.[1]
- ^ Fontani, Marco; Costa, Mariagrazia; Orna, Mary Virginia (20 November 2014). The Lost Elements: The Periodic Table's Shadow Side. Oxford University Press. p. 265.
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