Chemistry - Solid State Question with Solution | TestHub

Number of atoms in $0.3\mathrm{mol}$ $$\begin{array}{rl}& =0.3\times {\mathrm{N}}_{\mathrm{A}}\\ & =0.3\times 6.022\times 10^{23}\\ & =1.8066\times 10^{23}\end{array}$$ i. For hep structure, Number of octahedral voids $=$ Number of atoms $$=1.8066\times 10^{23}$$ ii. For hcp structure, Number of tetrahedral voids $$\begin{array}{rl}& =2\times \text{ Number of atoms }\\ & =2\times 1.8066\times 10^{23}\\ & =3.6132\times 10^{23}\end{array}$$