Rajasthan BoardEnglish MediumSTD 12 ScienceChemistrySolid State4 Marks
Question
What is the effect of pressure and temperature on crystal structure?
✓
Answer
Effect of Pressure on Crystal Structure: Increase of pressure increases the coordination number during crystalization e.g. by applying high pressure, the NaCl crystal structure having 6 : 6 coordination changes to CsCl crystal structure having coordination number 8 : 8. $\underset{(6: 6 \text { Coordination })}{ NaCl \text { type structure }} \xrightarrow{\text { High Temperature }} \underset{(8: 8 \text { Coordination })}{ CsCl \text { type structure }}$ Effect of Temperature on Crystal Structure : Increase of temperature, decreases the co-ordination number e.g., on heating to 760 K CsCl structure having 8:8 coordination number changes to NaCl structure having coordination number 6 : 6. $\underset{(8: 8 \text { Coordination })}{CsCl \text { type structure }} \xrightarrow{\text { High Temperature }} \underset{(6: 6 \text { Coordination })}{ NaCl \text { type structure }}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.