Which has a bond angle of 109.5°? A C (diamond) B C (graphite) C NH₂ D NH₃ - AQA - A-Level Chemistry - Question 8 - 2020 - Paper 3

The bond angle of 109.5° is typically associated with a tetrahedral geometry, which occurs in molecules like ammonia (NH₃) and its derivatives. In NH₂, the lone pair of electrons affects the bond angle, but it is closely related to the geometry of this molecular shape. Thus, while NH₂ can have a bond angle near 109.5°, it does not possess the ideal tetrahedral angle due to the presence of the lone pair.