Question

Which one of the following arrangements does not give the
correct picture of the trends indicated against it ?
(a) F₂ > Cl₂ > Br₂ > I₂ : Oxidizing power
(b) F₂ > Cl₂ > Br₂ > I₂ : Electron gain enthalpy
(c) F₂ > Cl₂ > Br₂ > I₂ : Bond dissociation energy
(d) F₂ > Cl₂ > Br₂ > I₂ : Electronegativity.

Answer 1

Answer:

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Answer 2

Option B and C are incorrect.

Explanation:

• The option A says the oxidising power of halogens which is correctly mention here.

• The oxidation capacity of the halogens varies as F2 >Cl2 > Br2 > I2.

• The second option mentions the electron gain enthalpy of the halogens which is not correctly mentioned here.

• The electron gain enthalpy of chlorine and fluorine changes its place because of the smaller size of the fluorine which repels the coming electron.

• So correct order of electron gain enthalpy is Cl2 >F2 >Br2 >I2.

• The bond dissociation energy of the halogens are mentioned in option C which is also incorrect.

• It should be Cl2 > Br2 > F2 > I2.

• The final option is mentioning electronegativity which is correctly mentioned here.

• So option B and C are incorrect.

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