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

There is a collection of crystalline substances in a hexagonal close p

1.	There is a collection of crystalline substances in a hexagonal close packing. If the density of matter is ` 2.6 g//cm^(3)`, what would be the average density of matter in colleciton ? What fractionofthe space is actually unoccupied ?
Answer» In hexagonal close packing, packing efficiency is 74 % Density of matter = Packing fraction ` xx ` Total density = ` 74/100 xx 2.6 = 1.924 " g/cm"^(3)` % empty space ( space unoccupied ) = 100 - 74 = 26% .

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

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