Practice question
Question
A compound with 9 σ bonds and 1 π bond has a molecular formula of C₄H₆. Which carbon has a bond angle closest to 109.5°?
Explanation
CH₃CH=CHCH₂ fits C₄H₆ with 9 σ (6 C-H, 2 C-C, 1 from C=C) and 1 π (C=C). The first carbon (CH₃) is sp³, with a 109.5° bond angle.