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Whose experiments revealed the periodic law through X-ray spectra of elements?
ChemistryPeriodic Table
Quick Answer
Henry Moseley’s 1913 X-ray experiments revealed a regular pattern in the frequencies of elements. That pattern showed the periodic law is based on atomic number.
The Full Story
Henry Moseley measured the X-ray spectra of many elements in 1913 and found a precise mathematical relationship between X-ray frequency and atomic number. This was powerful evidence that the periodic table is ordered by nuclear charge, not by atomic mass. Moseley’s work gave the periodic table its modern scientific basis. It also helped identify which elements were missing and where they belonged.
Key Facts
1.1913 X-ray spectra
2.basis of periodic law
3.revealed missing elements
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Suggested video title for this topic:
"The X-ray pattern that revealed the true order of the elements"