Q.

Statement I :  Enthalpy of atomization is always positive.

Statement II : Enthalpy of solution can be positive or negative.

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a

Statements I and II are correct

b

Statement I is correct and statement II is incorrect

c

Statement I is incorrect and statement II is correct

d

Statements I and II are incorrect

answer is A.

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Detailed Solution

Statement I :  Enthalpy of atomization is always positive.

                       Energy is always required to break a bond.

Statement II : Enthalpy of solution can be positive or negative.

                        Lattice Enthalpy > Hydration Enthalpy….endothermic ;

                        Lattice Enthalpy < Hydration Enthalpy….exothermic ;

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Statement I :  Enthalpy of atomization is always positive.Statement II : Enthalpy of solution can be positive or negative.