Question

BF³ does not have proton but still acts as an acid and reacts with NH3. why?

Answer 1

boron trifloride acts as proton and easily can be combined with the NH3 molecule because the covalent bond form to support the BF3

Answer 2

Heya...

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QUESTION
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BF3 does not have proton but still acts as an acid and reacts with NH3 .why ?

ANSWER
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We know BF3 is an compound which is electron deficient.hence it acts as Lewis acid .NH3 has lon pair of electrons.hence it will acts as a Lewis base .

There is a bond( coordinate ) is formed between them

H3N:____BF3

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Hope it helps