Practice question
Question
A compound with 10 σ bonds and 1 π bond has a molecular formula of C₄H₈. Which carbon has a bond angle of approximately 120°?
Explanation
CH₃CH=CHCH₃ fits C₄H₈ with 10 σ (7 C-H, 2 C-C, 1 from C=C) and 1 π (C=C). The second carbon (CH=) is sp², with a 120° bond angle.