Henry Moseley By Ms_Bradley Nov 23, 1887 Henry Moseley born weymouth england Dec 7, 1910 Moseley predicted the undiscovered element Hafnium Jan 28, 1912 Moseley arranged elements in order of increasing atomic number Feb 18, 1913 Moseley showed that there was gaps between the atomic numbers sequence at numbers 43,61,72,and 75 Oct 21, 1913 Moseley discovered element Rhenium Nov 10, 1913 Application of x-ray specturm study atomic structre Mar 5, 1914 Moseley discovered that lanthanide must have 15 members Aug 10, 1915 Henry Moseley died in the service of the British Army
