Which of the following is the strongest Lewis | vedclass

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(D) Lewis base is a substance that can donate a lone pair of electrons. In the group $15$ hydrides $(NH_3, PH_3, AsH_3, SbH_3)$,the central atom has o

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$NH_3$

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(D) Lewis base is a substance that can donate a lone pair of electrons. In the group $15$ hydrides $(NH_3, PH_3, AsH_3, SbH_3)$,the central atom has one lone pair of electrons. The availability of this lone pair for donation depends on the size of the central atom. As we move down the group,the size of the central atom increases,and the lone pair occupies a larger orbital,making it less available for donation. $NH_3$ has the smallest central atom $(N)$,so its lone pair is held most effectively and is most available for donation,making it the strongest Lewis base.

Which of the following is the strongest Lewis base?

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