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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

`72%`

B

`48%`

C

`26%`

D

`32%`

Text Solution

Verified by Experts

The correct Answer is:
C
AB AB packing is hexagonal close packing in which all atoms occupy 74% of the total space. Hence, 26% of the space is empty or voids.
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NCERT FINGERTIPS-THE SOLID STATE -Number Of Atoms In Unit Cell And Close Packed Structures
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  2. If the radius of the octaheral void is r and the radius of the atoms i...

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  3. A metallic crystal cystallizes into a lattice containing a sequence of...

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  4. In ccp arrangement the pattern of successive layers can be designated ...

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  6. The cordination number of a metal crystallising in a hexagonal close-p...

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