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MHT CET202120 Sep 2021Evening ShiftChemistrySolid StateActual

What is the number of unit cells present in 3.9 ~g of potassium if it crystallizes in BCC Structure?

Options

  1. AN _ A 10
  2. BN _ A 10
  3. C2 ~N _ A
  4. DN _ A 20

Correct answer

D. N _ A 20

Step-by-step solution

aligned & Number of atoms = Mass Atomicmass N _ A = 3.9 39 N _ A =0.1 ~N _ A & In BCC unit cell, n =2 & Number of unit cells = 0.1 ~N _ A 2 = N _ A 20 aligned

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