A solid is made of two elements P&Q. Atoms P are in ccp arrangement and atoms Q occupy all the octahedral voids and half of the tetrahedral voids, then the simplest formula of the compound is

PQ₂

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P₂Q

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P₂Q₂

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Solution

The correct option is A
PQ₂

Four atoms (P) contributes to one unit cell from ccp arrangement and 4-atoms (Q) from the all octahedral
voids and 4-atoms (Q) from the half of the tetrahedral void contributes one unit cell.
So, formula of solid is P₄Q₈ so, the simplest formula of the solid is PQ₂

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A solid is made of two elements P&Q. Atoms P are in ccp arrangement and atoms Q occupy all the octahedral voids and half of the tetrahedral voids, then the simplest formula of the compound is

The correct option is A PQ2Four atoms (P) contributes to one unit cell from ccp arrangement and 4-atoms (Q) from the all octahedral voids and 4-atoms (Q) from the half of the tetrahedral void contributes one unit cell. So, formula of solid is P4Q8 so, the simplest formula of the solid is PQ2