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Moseley found regularities in the characteristic:
AMelting points
BBoiling points
CX-ray spectra
DFlame colours
Answer & Solution
Correct answer: C. X-ray spectra
1. Moseley worked on the elements in 1913.
2. He plotted a quantity from their X-ray spectra against Z.
3. The plot came out as a straight line.
_Source: syllabus Chemistry Part I, Chapter 3, Classification of Elements and Periodicity in Properties._
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