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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Assertion : In close packing of spheres, a tetrahedral void is surrounded by four spheres whereas an octahedral void is surrounded by six spheres. Reason : A tetrahedral void has a tetrahedral shape where as an octahedral void has an octahedral shape.

Assertion : In close packing of spheres, a tetrahedral void is surrounded by four spheres whereas an octahedral void is surrounded by six spheres. Reason : A tetrahedral void has a tetrahedral shape where as an octahedral void has an octahedral shape.

Assertion : In close packing of spheres The ratio of carionic radius to anionic radius in an ionic crystal is greater than 0.732. Its coordintaion number is (a) 6 (b) 8 (c) 1 (d) 4