GENERAL GEOLOGY

GEOLOGY

CRYSTALLOGRAPHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
before doing diffraction data collection done?
A
crystallization
B
model building
C
diffraction experiment
D
calculation of elektron density
Explanation: 

Detailed explanation-1: -The atoms in a crystal are arranged in a periodic array with long-range order and thus can produce diffraction. The wavelength of X rays are similar to the distance between atoms in a crystal.

Detailed explanation-2: -It can be used to determine either the lattice parameters, arrangement of individual atoms in a single crystal, or the phase anaylysis in case of polycrystalline materials and compunds.

Detailed explanation-3: -The key difference between X-ray crystallography and X-ray diffraction is that x-ray crystallography refers to the technique in which single crystals are exposed to x-rays, whereas x-ray diffraction refers to the technique in which a wide range of forms of the material are used for the measurement.

Detailed explanation-4: -When a powdered sample of crystalline material is placed in a diffractometer and bathed in X-rays then a characteristic pattern can be recorded, known as the diffraction pattern. The diffraction pattern is unique for each crystalline material. More items

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