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प्रश्न
Inspite of long range order in the arrangement of particles why are the crystals usually not perfect?
उत्तर
Crystals have long range repeated pattern of arrangement of constitutent particles but in the process of crystallisation some deviations from the ideal arrangement (i.e. defects) may be introduced, therefore, crystals are usually not perfect.
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संबंधित प्रश्न
Answer the following in brief.
Distinguish between ionic solids and molecular solids
Graphite and diamond are ____________.
In calcium fluoride, having the flurite structure the coordination number of Ca2+ ion and F− Ion are ____________.
The ionic radii of A+ and B− are 0.98 × 10−10 m and 1.81 × 10−10 m. the coordination number of each ion in AB is
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NaCl
Silicon carbide is an example of ____________.
Which of the following is a network solid?
NaCl type crystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying ____________.
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(i) SiC (Silicon carbide)
(ii) AlN
(iii) Diamond
(iv) I2
Which of the following is not correct?
