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KVPY2017ChemistrySolid State

Polonium (atomic mass = 209) crystallizes in a simple cubic structure with a density of 9.32 ~g ~cm ⁻³ . Its lattice parameter (in pm ) is closest to

Options

  1. A421
  2. B334
  3. C481
  4. D193

Correct answer

B. 334

Step-by-step solution

d = N M N _ A a ³ 9.32= 1 209 6.023 10²³ a ³ a ³=37.2 10^ -24 ~S a =3.33 10⁻⁸ ~cm 334 pm

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