Chemistry - Solid State Question with Solution | TestHub

ChemistrySolid StateBasic Crystal System and Bravais LatticesHard2 minPYQ_2024

ChemistryHardsingle choice

Calculate the number of atoms in 0.3 gram metal if it forms bec structure $[ρ \times a^{3} = 3 \times 1 0^{- 22} g]$

Options:

Answer:

Solution:

Mass of one unit cell is given by $ρ \times a^{3} = 3 \times 1 0^{- 22} g$ .

Number of unit cells in $0.3 g$ of the metal is $\frac{0.3}{3 \times 1 0 ^{- 22}} = 1 0^{21}$ .

For a body-centered cubic (bcc) structure, the number of atoms per unit cell is $Z = 2$ .

Total number of atoms is $2 \times 1 0^{21}$ .

Answer: $2.0 \times 1 0^{21}$

Stream:MHT_CETSubject:ChemistryTopic:Solid StateSubtopic:Basic Crystal System and Bravais Lattices

⏱ 2mℹ️ Source: PYQ_2024

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