Q.

Hydration enthalpy is highest for

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a

Bromide ion

b

Chloride ion

c

Fluoride ion

d

Iodide ion

answer is C.

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Detailed Solution

Atomic radius trend….FCl>Br>I;EN trend….F>Cl>Br>I;Electron gain enthalpy trend….ICl>Br>I>Cl->F->Br->I-B.D.E….Cl2>Br2>F2>I2;Iodine is most polarizable halogen.Reactivity and oxidizing power…..F2>Cl2>Br2>I2;Hydration enthalpy…F->Cl->Br->I-;Smaller the ion, larger the hydration enthalpy;MP and BP trend….F2
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