i. Arrange the following in decreasing order of bond dissociation enth

1.	i. Arrange the following in decreasing order of bond dissociation enthalpy F2 , Cl2 , Br2 , I2 ii. Bi does not form pπ-pπ bonds. Give reason for the observation.iii.Electron gain enthalpy of oxygen is less negative than sulphur. Justify
Answer» i. Arrange the following in decreasing order of bond dissociation enthalpy Cl₂ > Br₂> F₂ > I₂ ii. Bi does not form pπ-pπ bonds as its atomic orbitals are large and diffuse so effective overlapping is not possible iii. Due to small size of oxygen, it has greater electron electron repulsions

i. Arrange the following in decreasing order of bond dissociation enthalpy F2 , Cl2 , Br2 , I2 ii. Bi does not form pπ-pπ bonds. Give reason for the observation.iii.Electron gain enthalpy of oxygen is less negative than sulphur. Justify

Answer»

i. Arrange the following in decreasing order of bond dissociation enthalpy Cl₂ > Br₂> F₂ > I₂

ii. Bi does not form pπ-pπ bonds as its atomic orbitals are large and diffuse so effective overlapping is not possible

iii. Due to small size of oxygen, it has greater electron electron repulsions

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i. Arrange the following in decreasing order of bond dissociation enthalpy F2 , Cl2 , Br2 , I2 ii. Bi does not form pπ-pπ bonds. Give reason for the observation.iii.Electron gain enthalpy of oxygen is less negative than sulphur. Justify

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