Which of the following nitrogen trihalides is | vedclass

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(B) The basic strength of nitrogen trihalides $(NX_3)$ depends on the availability of the lone pair of electrons on the nitrogen atom. As the electron

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$NF_3$

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(B) The basic strength of nitrogen trihalides $(NX_3)$ depends on the availability of the lone pair of electrons on the nitrogen atom. As the electronegativity of the halogen atom $(X)$ increases,it pulls the electron density away from the nitrogen atom due to the inductive effect. The electronegativity order of halogens is $F > Cl > Br > I$. Since fluorine is the most electronegative,it exerts the strongest electron-withdrawing effect on the nitrogen atom in $NF_3$. This significantly reduces the availability of the lone pair on nitrogen,making $NF_3$ the weakest Lewis base among the nitrogen trihalides.

Which of the following nitrogen trihalides is the weakest base?

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