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  • Choose the correct statement from the following:Option: 1 Among the alkali metal halides, LiF is least soluble in water.Option: 2 The standard enthalpy of formation for alkali metal bromides becomes less negative on descending the

Choose the correct statement from the following:
Option: 1 Among the alkali metal halides, LiF is least soluble in water.
Option: 2 The standard enthalpy of formation for alkali metal bromides becomes less negative on descending the group.
Option: 3 The low solubility of CsI in water is due to its high lattice enthalpy.
Option: 4 LiF has least negative standard enthalpy of formation among alkali metal fluorides.

Answers (1)

best_answer

As we have learnt,

- \mathrm{LiF} is least soluble among the alkaline metal halides due to a very high value of lattic  energy

- The standard ethalpy of formation of alkali metal bromides becomes more negative on moving down the group

- The low solubility of \mathrm{CsI} is due to low hydration enthalpy

- \mathrm{LiF} has the most negative enthalpy of formation among alkaline fluorides.

Hence the correct answer is option is (1)

Posted by

vishal kumar

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