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Voids

The tetrahedr...

Question

The tetrahedral voids formed by ccp arrangement of $C l^{-}$ ions in rock salt structure are:

Occupied by

N a^{+}

ions

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Occupied by

C l^{-}

ions

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Occupied by either

N a^{+} o r C l^{-}

ions

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vacant

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Solution

The correct option is C vacant
From structure it can be seen that, no ion located at tetrahedral void so they are vacant.

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Similar questions

N a^{+}

=

C l^{-}

C l^{-}

N a^{+}

In which of the following structures coordination number for cations and anions in the packed structure will be same ?

(a) $C l^{-}$ ions form fcc lattice and $N a^{+}$ ions occupy all octahedral voids of the unit cell

(b) $C a^{2 +}$ ions form fcc lattice and $F^{-}$ ions occupy all the eight tetrahedral voids of the unit cell

(d) $S^{2 -}$ ions form fcc lattice and $Z n^{2 +}$ ions go into alternate tetrahedral voids of the unit cell

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