Q.

Ionization enthalpy is highest for

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a

Iodide ion

b

Chloride ion

c

Bromide ion

d

Fluoride ion

answer is B.

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Detailed Solution

Atomic radius trend….F<Cl<Br<I;

Density trend….F<Cl<Br<I;

IP trend….F>Cl>Br>I;

EN trend….F>Cl>Br>I;

Electron gain enthalpy trend….I<Br<F<Cl;

IP trend…..I-<Br-<F-<Cl-;

IP trend….F>Cl>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<Cl2<Br2<I2; Due to increased strength of London dispersion forces;

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