Question

Which of the following halogen has highest bond dissociation energy?

Solution

Correct option is

Cl – Cl

As we know, that the smaller the bond length, stronger the bond, and so, it has higher bond dissociation energy. However, in case of  , F being of extremely small size, there is a lone pair-lone pair repulsion between F–F in F2. So F–F bond becomes weaker, and its bond-dissociation becomes lesser than that of Cl–Cl bond. So Cl–Cl bond has highest bond dissociation energy.   

SIMILAR QUESTIONS

Q1

Which acid will you use to dissolve lead (II) oxide?

Q2

Sulphur dioxide bleaches colouring matter by

Q3

Which of the following is not hydrolysed?

Q4

When Sn is treated with conc. HNO3

Q5

Which of the following is highly acidic than others?

Q6

One mole of calcium phosphide on reaction with excess water gives:

Q7

KF combines with HF to form KHF2. The compound contains the species: 

Q8

Chlorine acts as a bleaching agent only in presence of:

Q9

The set with correct order of acidity is:

Q10

The structure of XeO3 is: