KF has NaCl structure. The edge length of its unit cell has been found to be 537.6 pm. The distance between K + and F - in KF is

Question

KF has NaCl structure. The edge length of its unit cell has been found to be 537.6 pm. The distance between K + and F - in KF is, 537.6 pm, 1075.2 pm, 268.5 pm, None of these

MARKS App · Accepted Answer

For Nacl type crystals a = 2 r cation + r anion ⇒ r cation + r anion = a 2 = 537 2 = 268.5 pm .

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