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ChemistryNEET 2019

Chemistry question

A compound is formed by cation C and anion A. The anions form a hexagonal close-packed (hcp) lattice and the cations occupy 75% of the octahedral voids. The formula of the compound is:

  1. A.C2A3\mathrm{C_2A_3}
  2. B.C3A2\mathrm{C_3A_2}
  3. C.C3A4\mathrm{C_3A_4}✓
  4. D.C4A3\mathrm{C_4A_3}

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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