Ga (atomic mass \( 70 \mathrm{u} \) ) crystallizes in a hexagonal c...

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Ga (atomic mass \( 70 \mathrm{u} \) ) crystallizes in a hexagonal close packed structure. The total number of voids in \( 0.581 \mathrm{~g} \) of
P \( \mathrm{Ga} \) is \( \times 10^{21} \). (Round off to the Nearest Integer). [Given :

W) \( \left.\mathrm{N}_{\mathrm{A}}=6.023 \times 10_{23}\right] \)
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