JEE Advanced | 2014Atomic StructureHard
Question
If λCu is the wavelength of Kα X-ray line of copper (atomic number 29) and λMo is the wavelength of the Kα X-ray line of molybdenum (atomic number 42), then the ratio λCu/λMo is close to
Options
A.1.99
B.2.14
C.0.50
D.0.48
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= 2.14