Chemistry · Oct / Nov 2022 · Paper 12 · Question 11

Boron trifluoride, BF3, is a simple molecule. There are three covalent bonds in each BF3 molecule. Each of these bonds is made by sharing one electron from the boron atom and one electron from a fluorine atom. What is unusual about the bonding in boron trifluoride?

1. AIt is unusual for a non-metal such as fluorine to form covalent bonds.
2. BThe boron atom in each molecule does not gain the electronic configuration of a noble gas.
3. CThe covalent bonds do not consist of shared pairs of electrons.
4. DThe fluorine atoms in each molecule do not gain the electronic configuration of a noble gas.

As printed in the paper