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CBSE Class 12 Chemistry 2019 Outside Delhi Set 2 Solved Paper

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Question : 17 of 27
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An element XX with an atomic mass of 81 u81\,\mathrm{u} has density 10.2 g cm−310.2\,\mathrm{g}\,\mathrm{cm}^{-3}. If the volume of unit cell is 2.7×10−23 cm32.7 \times 10^{-23}\,\mathrm{cm}^3, identify the type of cubic unit cell. (( Given : NA=6.022×1023 mol−1N_A = 6.022 \times 10^{23}\,\mathrm{mol}^{-1} )
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