Question

what is the closest bond angle around the central atom? :f--be--f: 180° 120° 90° 109.5°

Explanation:

Step1: Determine the electron - pair geometry

The molecule \( BeF_2 \) has a central \( Be \) atom with 2 bonding pairs and 0 lone pairs. According to VSEPR (Valence - Shell Electron - Pair Repulsion) theory, the electron - pair geometry for a molecule with \( AX_2 \) (where \( A\) is the central atom and \( X\) is the surrounding atom) is linear.

Step2: Recall the bond angle for linear geometry

For a linear electron - pair geometry, the bond angle is \( 180^{\circ}\).

Answer:

\( 180^{\circ}\)