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  • Which of the following is correct resonating structure of ?Option: 1 <img al

Which of the following is correct resonating structure of \mathrm{BF}_3 ?

Option: 1


Option: 2


Option: 3


Option: 4

Both 1 and 2 


Answers (1)

best_answer

In \text{BF}_{3}, the boron atom has an incomplete octet. The fluorine atom on its side has a lone pair which it can donate to boron. But, flurorine is also a very electronegative element.The fluorine atom on its side has a lone pair which it can donate to boron. This way, the lone pair of electrons keep jumping between fluorine and boron. This is called back bonding. Backbonding is a type of resonance which is shown below.

Hence, option 3 is not the correct resonating structure of \text{BF}_{3}.

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Gunjita

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