Which of the following statements correctly describes the NaCl structure type? a. NaCl structure is composed of hexagonal close-packing of Cl- anions with Na+ cations occupying every tetrahedral hole, this arrangement of cations and anions results in a 6:6 cation:anion coordination b. NaCl structure is composed of cubic close-packing of Cl- anions with Na+ cations occupying every octahedral hole, this arrangement of cations and anions results in a 6:6 cation:anion coordination c. NaCl structures is composed of cubic close-packing of Cl- anions with Na+ cations occupying every second tetrahedral hole, this arrangement of cations and anions results in a 4:4 cation:anion coordination d. No answer text provided.

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