Question

according to vsepr theory, what is the shape of the molecule boron trifluoride? enter the correct answer in the box.

Explanation:

Step1: Determine the central atom and its valence - electron number

Boron (B) is the central atom in boron trifluoride ($BF_3$). Boron has 3 valence electrons.

Step2: Determine the number of bonding pairs

Each fluorine (F) atom forms a single bond with boron. Since there are 3 F atoms, there are 3 bonding pairs around the boron atom and 0 lone - pairs.

Step3: Apply VSEPR theory

According to VSEPR theory, when the central atom has 3 bonding pairs and 0 lone - pairs, the molecular geometry is trigonal planar.

Answer:

Trigonal planar