MHT CET202122 Sep 2021Morning ShiftChemistrySolid StateActual
What is the number of octahedral and tetrahedral voids presents respectively in 0.25 mole of a substance having hcp structure?
Options
- A3.011 10²³, 1.50 10²³
- B6.011 10²³, 3.011 10²³
- C3.011 10²³, 6.022 10²³
- D1.50 10²³, 3.011 10²³
Correct answer
D. 1.50 10²³, 3.011 10²³
Step-by-step solution
In HCP structure for each atom one octahedral void and two tetrahedral voids will be present. No. Of atoms =0.25 N _ A =0.25 6.022 10²³ No. of octahedral voids =0.25 ~N _ A =1.5 10²³ No. of tetrahedral voids =2 0.25 N _ A =3.011 10²³