Which molecule is only electron donor ?

N H_{3}

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B F_{3}

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P F_{3}

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A s F_{5}

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Solution

The correct option is A $N H_{3}$
$N H_{3}$ molecule is an electron donor.

In $N H_{3}$ , the central atom nitrogen contains a lone pair of electrons.
So ammonia is electron rich molecule and hence a lewis base.
$N H_{3}$

So the answer is A.

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Similar questions

The correct increasing bond angle among $B F_{3}, P F_{3}$ and $C l F_{3}$ follows the order

B F_{3}, P F_{3}

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B F_{3}, N H_{3}, P F_{3}

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S b F_{6}, A s F_{5}

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F^{-} f r o m H F

A s F_{5} + H F ⇌ H^{+} + [A s F_{6}]^{-}

B F_{3} + H F ⇌ H^{+} + [B F_{4}]^{-}

H_{2} O, C O_{2}, C C l_{4}, C H C l_{3}, N H_{3}, B F_{3}, B e F_{2}

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