MCQ
For the structural analysis of crystals, $X$-rays are used because
  • $X$-rays have wavelength of the order of interatomic spacing
  • B
    $X$-rays are highly penetrating radiations
  • C
    Wavelength of $X$-rays is of the order of nuclear size
  • D
    $X$-rays are coherent radiations

Answer

Correct option: A.
$X$-rays have wavelength of the order of interatomic spacing
Interatomic spacing in a crystal acts as a diffraction grating.

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