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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

Verified by Experts

In hexagonal closed packed, the packing efficiency is `74.05%`.
`therefore` Density of matter= packing fraction `xx` Total density `=(74.05)/(100)xx2.6=1.93 g cm^(-3)`
`%` empty space `=100-74.05=25.95 %`
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