Question
Explain with diagram, the vacancy defect.
✓
Answer
- During the crystallization of a solid, a particle is missing from its regular site in the crystal lattice.
- The missing particle creates a vacancy in the lattice structure. Thus, some of the lattice sites are vacant because of missing particles as shown in the figure. Such a crystal is said to have a vacancy defect.
- The vacancy defect can also be developed when the substance is heated.
- Due to the absence of particles, the mass of the substance decreases. However, the volume remains unchanged. As a result, the density of the substance decreases.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Explain the meaning of inner-transition series.
Write electrode reaction and net cell reaction for fuel cell. Calculate $e.m.f.$ of the following cell at $25^{\circ} C$ :
$Zn _{( s )} \mid Zn ^{2 \oplus}\left( aq) (0.1 M ) \| Cu ^{\oplus 2}{ }_{( aq )}(0.5 M ) \mid Cu _{( s )}\right.$
Standard reduction potential $\text{(SRP)}$ of $Zn$ and $Cu$ are $-0.76 V$ and $0.334 V$ respectively.
→$Zn _{( s )} \mid Zn ^{2 \oplus}\left( aq) (0.1 M ) \| Cu ^{\oplus 2}{ }_{( aq )}(0.5 M ) \mid Cu _{( s )}\right.$
Standard reduction potential $\text{(SRP)}$ of $Zn$ and $Cu$ are $-0.76 V$ and $0.334 V$ respectively.
The extent of actinoid contraction is greater than lanthanoid contraction. Explain Why?
How Is reaction intermediate predicted in the reaction?
Simple hydrocarbons, ethers, ketones and alcohols do not get oxidized by Tollen’s reagent. Explain, Why?
How do noble gases occur?
If the half-life period of a zero order reaction with initial concentration $0.1 M$ is $21.3 min$, what will be the half-life when the concentration is $0.3 M$ ?
→What is the action of Grignard reagent on benzonitrile?
Explain primary benzylic halide shows higher reactivity by $S_N1$ mechanism than other primary alkyl halide.
→How is phenol prepared from cumene?