EASY
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IMPORTANT
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Which type of 'defect' has the presence of cations in the interstitial sites?
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Important Questions on Solid State
MEDIUM
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IMPORTANT
Experimentally it was found that a metal oxide has formula . Metal M, is present as and in its oxide. Fraction of the metal which exists as would be:
EASY
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IMPORTANT
Which of the following exists as covalent crystals in the solid state ?
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crystallises in body centred cubic lattice. If 'a' is its edge length then which of the following expressions is correct?
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IMPORTANT
A crystal is made up of metal ions and and oxide ions. Oxide ions form a ccp lattice structure. The cation occupies of octahedral voids and the cation occupies of tetrahedral voids of oxide lattice. The oxidation numbers of and are respectively :
HARD
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IMPORTANT
An element crystallises in a face–centred cubic (fcc) unit cell with cell edge a. The distance between the centres of two nearest octahedral voids in the crystal lattice is:
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IMPORTANT
A diatomic molecule has a body-centred cubic structure with a cell edge of The density of the molecule is The number of molecules present in of is :
(Avogadro constant )
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IMPORTANT
Sodium metal crystallizes in a body centred cubic lattice with a unit cell edge of . The radius of sodium atom is approximately:
MEDIUM
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IMPORTANT
The empirical formula for a compound with a cubic close packed arrangement of anions and with cations occupying all the octahedral sites in The value of is (Integer answer)
