Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
The number of tetrahedral voids present in 0.5 mole of $h c p$ crystal structure are
ChemistrySolid StateAIIMSAIIMS 2019 (25 May)
Options:
  • A $3.6 \times 10^{23}$
  • B $9 \times 10^{23}$
  • C $3.6 \times 10^{24}$
  • D $6.02 \times 10^{23}$
Solution:
1943 Upvotes Verified Answer
The correct answer is: $3.6 \times 10^{24}$
For hcp, $Z=6$
$\therefore$ Tetrahedral voids $=2 Z=2 \times 6=12$
Tetrahedral voids present in $0.5 \mathrm{~mol}=12 \times 0.5 \mathrm{~mol}$ $=6 N_A=6 \times 6.02 \times 10^{23}=3.6 \times 10^{24}$

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.