Assertion :All Bronsted bases are Lewis bases. Reason: A species that accepts a proton necessarily should donate a lone pair of electrons.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct but Reason is incorrect
Assertion is incorrect but Reason is correct
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
All Bronsted-Lowry bases must have a lone pair to accept $$H^+$$ ion, and all Lewis bases have lone pairs. However, Lewis bases may act as nucleophiles for any number of atoms; $$B$$, $$Al$$, $$C$$, etc; not just $$H$$.
So, all Bronsted-Lowry bases are Lewis bases, but not all Lewis bases are Bronsted-Lowry bases.