The solubility order for alkali metal fluoride in water is
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a
LiF
b
RbF< KF< NaF
c
LiF> NaF> KF>RbF
d
LiF<< NaF< KF
answer is D.
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Detailed Solution
Higher the lattice enthalpy lower will be solubility i.e., lattice enthalpy ∝1 Solubility Since the lattice enthalpy of alkali metals follow the order Li> Na> K> RbHence the correct order of solubility is LiF< NaF