11th Class Chemistry The s-Block Elements

  • question_answer 46)   The solubility of metal halides depends on their nature, lattice enthalpy and hydration enthalpy of the individual ions. Amongst fluorides of alkali metals the lowest solubility of\[~LiF\] in water is due to : (a) ionic nature of lithium fluoride                            (b) high lattice enthalpy (c) high hydration enthalpy for Li-ion                      (d) low ionisation enthalpy of Li-atom

    Answer:

      (b) Lattice energy of\[LiF\]is higher than its hydration energy and thus, it has low solubility in water.

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