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NEET CHEMISTRYP Block ElementsEasy

Question

A compound among the following that is least likely to behave as a Lewis base is:

A

NH3

B

BF3

C

OH-

D

H2O

Step-by-Step Solution

According to the Lewis concept, a base is a species that can donate an electron pair, while an acid is a species that can accept an electron pair [1, 2]. In BF3 (Boron trifluoride), the central boron atom is electron-deficient and has an incomplete octet. Therefore, it tends to accept an electron pair, acting as a strong Lewis acid [2]. On the other hand, NH3, OH-, and H2O all possess lone pairs of electrons that they can donate, allowing them to readily act as Lewis bases [2].

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from P Block Elements. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYP Block Elementscompoundfollowinglikelybehave

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