Which one is the strongest bond ?

B r - F

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F - F

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C l - F

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B r - C l

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Solution

The correct option is A $C l - F$
The bond energy is a measure of the amount of energy needed to break apart one mole of covalently bonded gases.
Bond energy for following molecules:
$B r - F = 237$ kJ/mol
$F - F = 154$ kJ/mol
$C l - F = 253$ kJ/mol
$B r - C l = 218$ kJ/mol
$C l - F$ bond is strongest among all. Bond energy depends on electronic repulsions and electronegativities.

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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 decreasing order of electron affinity of

F, C l, B r i s F > C l > B r

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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