Give reasons for the following:NF3 is an exothermic compound, whereas NCl3 is not.BiCl5 acts as strong oxidising agent.F2 has lower bond enthalpy as compared to Cl2.

Give reasons for the following:NF3 is an exothermic compound, whereas

1.	Give reasons for the following:NF3 is an exothermic compound, whereas NCl3 is not.BiCl5 acts as strong oxidising agent.F2 has lower bond enthalpy as compared to Cl2.
Answer» Since bond dissociation energy of F₂ is lower than Cl₂ moreover fluorine forms stronger bond with nitrogen due to comparable size. Due to inert pair effect Bi in +3 state is more stable than +5 state. Therefore, in +5 oxidation state it accepts two electrons to get reduced to +3 state. Due to small size of fluorine, there is strong lone pair-lone pair repulsion between two F atoms hence its bond enthalpy is lower than Cl₂.

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Give reasons for the following:NF3 is an exothermic compound, whereas NCl3 is not.BiCl5 acts as strong oxidising agent.F2 has lower bond enthalpy as compared to Cl2.

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