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Henry Moseley born
weymouth england -
Moseley predicted the undiscovered element Hafnium
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Moseley arranged elements in order of increasing atomic number
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Moseley showed that there was gaps between the atomic numbers sequence at numbers 43,61,72,and 75
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Moseley discovered element Rhenium
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Application of x-ray specturm study atomic structre
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Moseley discovered that lanthanide must have 15 members
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Henry Moseley died in the service of the British Army