He predicted the existence of the non-naturally-occuring elements promethium and technetium.
He predicted the existence of the non-naturally-occuring elements promethium and technetium. An overview of Bragg's work and an ordering of the elements based on straight line plots against the square root of the frequency of K-series radiation are included in his 1913 paper The High Frequency Spectra of the Elements. FTP, name this English physicist who justified the concept of the atomic number based on his X-ray work and who met his maker at Gallipoli.
He predicted the existence of the non-naturally-occuring elements promethium and technetium.
Henry Gwyn Jeffries {Moseley}