MPSC Rajyaseva 2019 GS Paper 1 — Question 17
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खालीलपैकी कोणते लुईस आम्ल नाही ? Which of the following is not a Lewis acid?
1)बेरीअम क्लोराईड (BaCl₂)✓ Correct
2)बोरॉन ट्राय क्लोराईड (BCl₃)
3)बेरीलीअम क्लोराईड (BeCl₂)
4)बोरॉन ट्राय फ्लोराईड (BF₃)
A Lewis acid is an electron-pair acceptor. Barium chloride (BaCl2) is an ionic compound and acts as a source of chloride ions, not an electron-pair acceptor in the Lewis sense, unlike boron and beryllium halides which have incomplete octets.