Question

the bond angle for a tetrahedral geometry is ——. options (from image): 120°, 180°, 109.5°, 90°

Explanation:

Step1: Recall tetrahedral bond angle

In molecular geometry, a tetrahedral geometry (e.g., in \(CH_4\)) has a bond angle of \(109.5^\circ\). The other angles: \(120^\circ\) is for trigonal planar, \(180^\circ\) for linear, \(90^\circ\) for octahedral (or some other geometries, not tetrahedral).

Step2: Identify the correct option

From the given choices, the angle \(109.5^\circ\) matches the tetrahedral bond angle.

Answer:

The bond angle for a tetrahedral geometry is \(109.5^\circ\) (the orange - colored option with \(109.5^\circ\)).