Which of the following is not an electrophile? How is this determined?

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Which of the following is not an electrophile? How is this determined?

$N O_{2}^{+}$ $NO_2^+$
$B F_{3}$ $BF_3$
$C H_{2} = C H_{2}$ $CH_2=CH_2$
$H^{+}$ $H^+$

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Answer 1 · 2016-07-18T11:27:47

"Electrophiles are positively charged or neutral species having vacant orbitals that are attracted to an electron rich centre. It participates in a chemical reaction by accepting an electron pair in order to bond to a nucleophile"

On the basis of above definition given in the net we can judge which one of the given species is not an eletrophile.

$N O_{2}^{+} and H^{+} positively charged$ $NO_2^+ and H^+ "positively charged"$ so attracted towards ngatively charged centers and hence they are charged electrophiles.

$B F_{3} \to$ $BF_3->$ A neutral molecule but the valence shell of its central atom B is not completely fulfilled.This electron deficiency makes it an electrophile.

$C H_{2} = C H_{2}$ $CH_2=CH_2$ is neutral molecule but it has got $π$ $pi$ -bond.So this molecule is capable of donating eletron.Hence does not act as an electrophile.

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Which of the following is not an electrophile? How is this determined?

$N O_{2}^{+}$ $NO_2^+$
$B F_{3}$ $BF_3$
$C H_{2} = C H_{2}$ $CH_2=CH_2$
$H^{+}$ $H^+$

1 Answer

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Which of the following is not an electrophile? How is this determined?

NO+2NO_2^+ BF3BF_3 CH2=CH2CH_2=CH_2 H+H^+

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$N O_{2}^{+}$ $NO_2^+$
$B F_{3}$ $BF_3$
$C H_{2} = C H_{2}$ $CH_2=CH_2$
$H^{+}$ $H^+$