In which of the following structures coordination number for cations and anions in the packed structure will be same?

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Cl– ion form fcc lattice and Na+ ions occupy all octahedral voids of the unit cell. Explanation: NaCl crystals have rock salt structure having fee lattice in which Cl– ions are present at fee lattice points and face centre and Na+ occupies all the octahedral voids of given unit cell. Where, coordination number of Na+ = 6

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