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MHT CET202210 Aug 2022Evening ShiftChemistrySolid StateActual

Calculate the number of atoms in 5 gram metal that crystallises to form simple cubic unit cell structure having edge length 336 pm . (Density of metal =9.4 ~g ~cm ⁻³ )

Options

  1. A1.4 10²²
  2. B1.8 10²²
  3. C1.0 10²²
  4. D2.1 10²²

Correct answer

A. 1.4 10²²

Step-by-step solution

aligned & d = z v M N _ A & 9.4= 1 M (3.36 10⁻⁸ )^3 6.02 10²³ aligned M =214.65 ~g / mol No. of atoms = 5 214.65 6.02 10²³=1.4 10²²

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