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When particles are close packed resulting in either ccp or hcp structure, two type of voids are generated. The number of octahedral voids present in a lattice is equal to the number of close packed particles and the number of tetrahedral voids generated is twice the number of close packed particles. In ionic solids, the bigger anions generally form the ccp lattice and smaller cations occupy the voids.Q. In a ccp unit cell, the ratio of number of closely packed atoms to the total number of tetrahedral and octahedral voids is
प्रश्न - ccp एकक कोष्ठिका में, निबिड संकुलित परमाणुओं की संख्या और चतुष्फलकीय व अष्टफलकीय रिक्तियों की कुल संख्या का अनुपात है