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A metallic crystal cystallizes into a la...

A metallic crystal cystallizes into a lattice containing a sequence of layers `ABABAB…`. Any packing of spheres leaves out voids in the lattice. What percentage by volume of this lattice is empty spece?

A

`74%`

B

`26%`

C

`50%`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
`ABAB`type of packing means `ccp`packing in which `74%`space is occupied and`26%`is empty.
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