What is stoichiometric defect? What kind of defects are Schottky and Frenkel defects? Which one of these two defects is associated with decrease in density of the crystal, and which one is associated with no change in density? Give reasons.Solution in Bengali

A metal has face-centred cubic unit cell. The radius of an atom of the metal is 1.28Å. What is the edge length of the unit cell?

The unit cell with crystallographic dimensions, $a\ne b\ne c,\alpha =\gamma ={90}^{\circ },\beta \ne {90}^{\circ }$ is-

Crystalline quartz $\left(Si{O}_2\right)$ is-

Which of the following is strongly attracted by magnetic field /

How will you separate CO and $C{O}_2$ from a mixture?

Explain Schottky defect in Stoichiometric crystals. What are the consequences of Schottky and Frenkel defects in crystals ?

Due to Frenkel defect, the density of the crystal, …….. Wherease due to schottky defect, it ……

Due to Frenkel defect, the density of the crystal __________whereas due to Schottky defect, it..

Assertion (A) Both Frenkel and Schottky defects are stoichiometric defects. Reason (R ) Both defects change the density of the crystalline solid.

What is Schottky defect? Is it a stoichiometric or non-stoichiometric defect? What type of ionic crystals are likely to show this type of defect? Does the presence of this defect in a crystal increase or decrease the density of the crystal? Explain.

Which defect causes decrease in density of an ionic crystal, Schottky defect or Frenkel defect?

In an ionic crystal, Schottky defect decreases the density of the crystal but Frenkel defect does not cause any change in density of the crystal. Explain.

Give reasons : In stoichiometric defects, NaCl exhibits Schottky defect and not Frenkel defect.

Schottky defect lowers the density of the crystal but Frenkel defect does not. Discuss.

Stoichiometric defects are of two types such as vacancy defects and interstitial defects.
Which stoichiometric defect causes the decrease in density of solid?