Question

Which scientist used X-ray diffraction experiments to classify the elements?

• A. John Dalton
• B. J.W Dobereiner
• C. Dmitri Ivanovich Mendeleev
• D. Henry Moseley

Answer 1

The correct option is D

Henry Moseley

In 1913, the English physicist Henry Moseley prepared the modern periodic table by arranging the elements in the increasing order of atomic number. He used X-ray diffraction experiments to prove the properties of elements depending upon the atomic number and not on atomic mass.