JAMB Chemistry 2021 Objective — Question 7

Question 7 of 41 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2021 Objective paper, with the correct answer and a full explanation.

What is the shape of BF₃?

A. Trigonal pyramidal
B. Trigonal planarCorrect
C. Tetrahedral
D. Angular

Explanation

BF₃: B has 3 bonding pairs and 0 lone pairs. VSEPR gives trigonal planar geometry with F–B–F angles of 120°. Hybridisation is sp².

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