X-Ray Crystallography

IMPORTANT

X-Ray Crystallography: Overview

This Topic covers sub-topics such as Symmetry in Crystals, Centre of Symmetry in Crystals, Axis of Symmetry in Crystals, Plane of Symmetry in Crystals, X-Ray Diffraction in Crystal Systems : Bragg's Equation and, Miller Indices in Crystal Systems

Important Questions on X-Ray Crystallography

EASY
IMPORTANT

The miller indices of a crystal plane which cuts through the crystal axes at 2a,3b,c are 

MEDIUM
IMPORTANT

Which of the following relation is correct for first-order Bragg's diffraction?

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IMPORTANT

The total number of elements of symmetry in a cubic crystal is

EASY
IMPORTANT

Bragg's law is given by the equation 

EASY
IMPORTANT

Regarding symmetry of simple cubical lattice which of the following is/are correct ?

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IMPORTANT

When a certain crystal was studied by the Bragg technique using X-rays of wavelength 229 pm, an X-ray reflection was observed at an angle of 23° 20'. What is the corresponding interplanar spacing? sin23°20=0.396

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IMPORTANT

X-ray are diffracted from a crystal of lattice plane spacing 2 Å. The maximum wavelength that can be diffracted is

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IMPORTANT

For a crystal, the angle of diffraction (2θ) is 90o and the second order line has a d value of 2.28 A . The wavelength (in A  ) of x-rays used for Bragg's diffraction is