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8. If the distance between Na+ and Cl- ions in sodium chloride crystal is X pm, then length of the edge of the unit cell is? A. 2X pm B. 4X pm C. X/2 pm D. X/4 pm

Answer» 8. If the distance between Na+ and Cl- ions in sodium chloride crystal is X pm, then length of the edge of the unit cell is? A. 2X pm B. 4X pm C. X/2 pm D. X/4 pm


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