The solubility order of the chlorides of the alkali metals is

NaCl > KCl > RbCl > CsCl

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CsCl > RbCl > KCl > NaCl

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KCl > NaCl > RbCl > CsCl

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Cs Cl > RbCl > NaCl > KCl

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Solution

The correct option is A NaCl > KCl > RbCl > CsCl
Solubility of chlorides of alkali metal decrease down the group.Stability of alkali metal chlorides decreases down the group. lattice enthalpy of ionic solid of cation of same valency having same anion decreases. It's due to down the group size of cation increases so attractive force between anion and cation decreases.
Hence Option A iscorrect answer

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Similar questions

Q. The lattice energies of

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RbCl has NaCl type lattice and its unit cell length is $0.30 \circ A$ greater than that for KCl. If $r_{k +} = 1.33 \circ A$ , the ionic radius of $R b^{+}$ is

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