Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The characteristics X- ray wavelength for the lines of the 
series in elements X and Y are 9.87Å and 2.29Å respectively. If Moseley’s equation 
is followed, the atomic numbers of X and Y are
Text Solution
Verified by ExpertsThe correct answer is:
A
using Moseley’s equation we get
…..(i)
and 
….. (ii)
On solving equation (i) and (ii) 
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