Ionic Solids and their Structures

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Ionic Solids and their Structures: Overview

This topic covers concepts, such as, Radius Ratio, Relation between Radius Ratio, Normal Spinal Structure & Inverse Spinel Structure etc.

Important Questions on Ionic Solids and their Structures

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An ionic compound   A B 2  possesses  Ca F 2 type crystal structure. The coordination number of   A 2+ and   B ions in crystals of   A B 2  is:

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A compound AB has rock salt type structure. The formula weight of AB is 6.023 Y amu, and the closest AB distance is Y 1 3 nm, where Y is an arbitrary number. The density of lattice is

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In which of the following crystals, the alternate tetrahedral voids are occupied?

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The edge length of M+X- (fcc structure) is 7.2 Ao. Assuming M+-X- contact along the cell edge, calculate the radius of X- ion rM+=1.6 Ao?

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A student finds a crystal of NaCl having mass 58.5 mg. He uses some of it to prepare 0.05M,10 mLNaCl solution. How many unit cells are remained in the crystal ? NA=6×1023

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A crystal is made of particles A and B. A forms FCC packing and B occupies all the octahedral voids. If all the particles along the plane as shown in figure are removed, then, the formula of the crystal would be :




Question Image

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The coordination number (CN) of a M2+ ion in MX2 is 8. Hence, CN of X- is-

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A solid compound XY has NaCl structure. If the radius of the cation is 100 pm, the radius of the anion Y- in pm will be

(Round of the answer up to four significant figures)

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In NaCl solid, if all the ions are removed along one of the axes joining the centres of any two diagonally opposite edges in a unit cell, then the resulting stoichiometry of the solid is

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The interionic distance between cation and anion in caesium chloride crystal will be :-

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In NaCl crystal, the number of nearest neighbours of each Na+ ions are:-

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The radius of Ag+ ion is 126 pm and I- ion is 216 pm. The co-ordination number of Ag+ ion is:-

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Which type of structure does RbCl have if ionic radii of Rb and IΘ respectively are 1.46 A°  and 2.16 A°:-

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The tetrahedral voids formed by ccp arrangement of ions Cl- in rock salt structure are

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What will be value of rCs++rCr in CsCl crystal having edge length 'a'?

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The positions of C- ions in NaCl structure are:

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In a solid 'AB' having the NaCl structure, 'A' atoms occupy the every CCP and B atoms are in OHV. If all the face-centred atoms along one of the axes are removed, then the resultant stoichiometry of the solid is-
 

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The edge length of face centred cubic unit cell having rock salt structure is 508 pm. If the radius of the cation is 110pm, the radius of the anion is-
 

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An ionic crystal lattice has r+/r- radius ratio of 0.524. Its coordination number is

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The NaCl structure can be converted into CsCl structure:-