1.

Identify a species which is 'NOT' a Bronsted acid but a Lewis acid.

Answer»

`BF_(3)`
`H_(3)^(+)O`
`NH_(3)`
HCl

Solution :MOLECULES having a CENTRAL ATOM with incomplete octet, act as a Lewis acid not Bronsted acid (proton donor). In `BF_(3)`, B is having 6 ELECTRONS.


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