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NEET UG CHEMISTRY MCQ: SOLID STATE

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If Z\mathrm{Z} is the number of atoms in the unit cell that represents the closest packing sequence −ABCABC−,- ABCABC - , the number of tetrahedral voids in the unit cell is equal to :
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Correct option: B
2Z2\mathrm{Z}
Option B (2Z2\mathrm{Z}) is correct because the number of tetrahedral voids is always twice the number of atoms in the unit cell.

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Schottky defect in crystals is observed when Calculate the ionic radius of a Cs+\mathrm{C}{\mathrm{s}^ + } ion, assuming that the cell edge length for CsCl is 0.4123 nm and that the ionic radius of a CI−\mathrm{C}{\mathrm{I}^ - } ion is   0.181  nm\;0.181\,\,nm Wrong match is A molecule contains atoms AA and BB such that AA occurs at the corners of the cube and YY at the face centres. The formula of the molecule is Which species is diamagnetic ? The arrangement ABCABC……is referred to as,
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