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There is a collection of crystalline sub...

There is a collection of crystalline substances in a hexagonal closed packing. If the density of matter is `2.6 g//cm^(3)`, what would be the average density of matter in collection? What fraction of space is actually unoccupied ?

Text Solution

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In hexagonal close packing , packing efficiency is 74 %
`therefore` Density of matter = Packing fraction x Total density =`74/100xx2.6=1.924 "g/cm"^3`
% empty space (space unoccupied ) =100-74=26%
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