The Solid State

Question 57
CBSEENCH12005405

Give two exampls of the compounds that exhibit Schottky defect.

Solution
KCl, AgBr
Question 58
CBSEENCH12005406

What are interstitials in a crystal?

Solution
The atoms or ions which occupy the voids present in a crystal are termed interstitials.
Question 59
CBSEENCH12005407

What will happen if NaCl crystal is subjected to high pressure?

Solution
It will change to CsCI structure i.e.At High pressure the coordination number change from 6:6 to 8:8 .
Question 60
CBSEENCH12005408

What is unit cell.

Solution
Unit cell: It is the smallest repeated unit in a crystal lattice e.g., in sodium chloride and caesium chloride, the unit cell is a cube. It has all the characteristic properties of crystal.

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