1.

The correct order of the packing efficiency in different types of unit cells is

Answer»

`"fcc" lt "bcc" lt "simple CUBIC"`
`"fcc" gt "bcc" gt "simple cubic"`
`"fcc" lt "bcc" gt "simple cubic"`
`"bcc" lt "fcc" gt "simple cubic"`

SOLUTION :Number of tetrahedral VOIDS is always DOUBLE than the number of octahedral voids.


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