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MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryPeriodic PropertiesModern Periodic Table

In 1913, Henry Moseley observed regularity in the characteries…A…of the elements. Here, ‘A’ refers to

A.ultraviolet spectra

B.X-ray spectra✓ Correct

C.infrared spectra

D.visible spectra

Explanation

In 1993, Henry Moseley observed regularities in the characteristic X-ray spectra of the elements.

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