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Area of a Circle

In closest pa...

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In closest packing of spheres of uniform size the ratio of radii of octahedral and tetrahedral holes is

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In the closest packing of spheres of uniform size, the ratio of radii of octahedral and tetrahedral holes is :

Q. In a closed packing, the ratio of numbers of tetrahedral holes to that of octahedral holes is given by:

Q. Assertion : In crystal lattice, the size of the cation is larger in a tetrahedral hole than in an octahedral hole.
Reason : The cations occupy more space than anions in crystal packing.

Q. Assertion :A tetrahedral void is surrounded by four spheres and an octahedral void is surrounded by six spheres. Reason: The number of tetrahedral voids is double the number of close packed spheres and number of octahedral voids is equal to number of close packed spheres.

Q. The number of octahedral and tetrahedral holes respectively present in a hexagonal close packed (hep) crystal of 'X' atoms are:

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