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Volume occupied by all particles in a bcc or fcc unit cell from the unit cell volume

The same question, asked 4 times: 3 May 2023 S1*, 22 Apr 2025 S1*, 23 Apr 2025 S1*, 25 Apr 2025 S2. Every wording below, oldest first.

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  1. Question 1

    3 May 2023 S1

    86
    Calculate the volume occupied by all atoms in bcc unit cell if the volume of unit cell is 1.5×10−22 cm31.5\times10^{-22}\ \text{cm}^3.

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  2. Question 2

    22 Apr 2025 S1

    54
    Calculate the volume occupied by all particles in fcc unit cell if volume of unit cell is 1.6×10−23 cm31.6 \times 10^{-23}\ \mathrm{cm^3}.

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  3. Question 3

    23 Apr 2025 S1

    65
    Calculate the volume occupied by all particles in bcc unit cell if the volume of unit cell is 8.0×10−23 cm38.0 \times 10^{-23}\,\text{cm}^3.

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  4. Question 4

    25 Apr 2025 S2

    76
    Calculate the total volume occupied by all particles in fcc unit cell if volume of unit cell is 6.4×10−23 cm36.4 \times10^{- 23}{\text{ }cm}^{3}

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