Select the correct order of polarisability of the given species.

I^{-} > B r^{-} > C l^{-} > F^{-}

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I^{-} > B r^{-} > F^{-} > C l^{-}

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I^{-} < B r^{-} < C l^{-} < F^{-}

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I^{-} < B r^{-} < F^{-} < C l^{-}

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Solution

The correct option is A $I^{-} > B r^{-} > C l^{-} > F^{-}$
Polarisability is directly proportional to the size of anions. More the size of the anion, lesser will be the hold of its nucleus on its electronic cloud and more easily it will get polarised. Therefore, the order is:
$I^{-} > B r^{-} > C l^{-} > F^{-}$

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Similar questions

Q. The correct order of polarizability is

I^{-}, B r^{-}, C l^{-}, F^{-}

Among halogens, the correct order of amount of energy released in electron gain (electron gain enthalpy ) is
(a) F > Cl > Br > I (b) F < Cl < Br < I (c) F < Cl > Br > I (d) F < Cl < Br < I

Q. The correct order of polarizability is

I^{-}, B r^{-}, C l^{-}, F^{-}

Q. Arrange the following bonds according to their average bond energies in descending order:

C - C l, C - B r, C - F, C - I

Q. Which of the following options does not give to the correct trends indicated against it?
(I)

F_{2} > C l_{2} > B r_{2} > I_{2}

: Bond dissociation energy
(II)

F_{2} > C l_{2} > B r_{2} > I_{2}

: Oxidizing nature
(III)

C l > F > B r > I

: Electron gain enthalpy
(IV)

F > C l > B r > I

: Electronegativity

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Ionic and Covalent Character

Standard XII Chemistry

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Select the correct order of polarisability of the given species.

The correct option is A I−>Br−>Cl−>F−Polarisability is directly proportional to the size of anions. More the size of the anion, lesser will be the hold of its nucleus on its electronic cloud and more easily it will get polarised. Therefore, the order is: I−>Br−>Cl−>F−