Answer
B-F is polar.
Work Step by Step
F has an electronegativity of 4.
B has an electronegativity of 2.
This difference causes the bond to be polar.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.