Chemistry · 2021
JEE Main · 16 March 2021, Shift 2 · Q52
Ga (atomic mass 70 u) crystallizes in a hexagonal close packed structure. The total number of voids in 0.581 g of Ga is \ \ \ \ × 10^21. (Round off…
Ga (atomic mass $\displaystyle 70$ u) crystallizes in a hexagonal close packed structure. The total number of voids in $\displaystyle 0.581$ g of Ga is \_\_\_\_ $\displaystyle \times 10^{21}$. (Round off to the Nearest Integer).
[Given : $\displaystyle \mathrm{N}_{\mathrm{A}}=6.023 \times 10^{23}$ ]
Official answer
15
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JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.