Metal Deficiency Defect

Q. Question 15-16 is based on the following given information: A sample of ferrous oxide has actual formula $F{e}_{0.93}O$. In this sample what fraction of metal ions are $F{e}^{2+}$ ions?

1. 0.93
2. 0.81
3. 0.79
4. 0.14

Q.

When $NaCl$ is doped with $1.0\times {10}^{-3}$ mole of $SrC{l}_2$, the number of cation vacancy is ?

1. $6.023\times {10}^{18}$

2. $6.023\times {10}^{20}$

3. $2\times 6.023\times {10}^{20}$

4. $3.011\times {10}^{20}$

Q.

In metal deficiency defect

1. Cations are missing from the lattice points

2. Anions are missing from the lattice points

3. Charge of the anion is increased

4. Charge of the anion is decreased

Q. Question 15-16 is based on the following given information: A sample of ferrous oxide has actual formula $F{e}_{0.93}O$. What type of nonstoichiometric defect is present in this sample?

1. Impurity defect
2. Metal excess defect due to presence of extra cations at interstitial sites
3. Metal excess defect due to anionic vacancies
4. Metal deficiency defect

Q. Question 15-16 is based on the following given information: A sample of ferrous oxide has actual formula $F{e}_{0.93}O$. What type of nonstoichiometric defect is present in this sample?

1. Impurity defect
2. Metal excess defect due to presence of extra cations at interstitial sites
3. Metal excess defect due to anionic vacancies
4. Metal deficiency defect

Q.

Which of the following defects is generally found in sodium chloride and cesium chloride?

1. Frenkel defect

2. Interstitial defect

3. Schottky defect

4. none of these

Q.

Write the chemical name for the ionic compound and mention the molecular weight

${\mathrm{FeC}}_2{\mathrm{O}}_4$