Final answer:
In F₂, the σ²p orbital has a nodal plane perpendicular to the internuclear axis at the midpoint of the bond.
Step-by-step explanation:
A completely bonding molecular orbital contains no nodes (regions of zero electron probability) perpendicular to the internuclear axis, whereas a completely antibonding molecular orbital contains at least one node perpendicular to the internuclear axis. In F₂, the σ²p orbital has a nodal plane perpendicular to the internuclear axis at the midpoint of the bond. This means that the correct orbital from the given options is σ²p.