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A compound is compound by cation C and anion A. The anions hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The fo

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A compound is compound by cation C and anion A. The anions hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is A. C 4 A 3 C B. C 2 A 3 C C. C 3 A 2 C D. C 3 A 4 C Select the correct answer from above options

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Correct Answer - D Number of atom per unit cell in h c p = 6 h number of octahedral void in h c p = 6 h Number of anions per unit cell = 6 = cation occupy 75% of octahedral void = 6 × 75 100 = 9 2 = C : A C 9 / 2 : 6 9 9 : 12 9 3 : 4 3 Formula of compound = C 3 A 4 =

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