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In which of the following ionic solids, the cations and anions are arranged in a body-centred cubic (BCC) structure?

Option: 1


Option: 2


Option: 3


Option: 4


Answers (1)


CsCl also known as caesium chloride, has a body-centred cubic (BCC) arrangement, where the caesium (Cs^+)cations are at the centre of the cube and the chloride (Cl^-) anions are at the corners of the cube.

NaCl (sodium chloride) has a face-centred cubic (FCC) structure, CaF_2 (calcium fluoride) has a fluorite structure, and MgO (magnesium oxide) has a rock salt structure.

Hence, the correct answer is an option (1) CsCl.

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