What are the number of octahedral and tetrahedral voids in $0.3 \ mol$ of a substance respectively,if it forms an $hcp$ structure?
- A$1.8066 \times 10^{23}$ and $3.6132 \times 10^{23}$
- B$3.6132 \times 10^{23}$ and $1.8066 \times 10^{23}$
- C$6.022 \times 10^{23}$ and $12.044 \times 10^{23}$
- D$12.044 \times 10^{23}$ and $6.022 \times 10^{23}$
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