Question

which of the following images represents a trigonal bipyramidal molecular geometry?

Explanation:

Trigonal bipyramidal molecular geometry has a central atom with five bonding pairs, arranged with three in a trigonal planar (equatorial) plane and two along the axial (perpendicular) axis. The first image (green - bordered) shows a central atom with five surrounding atoms: three in a plane (equatorial) and two above/below (axial), matching trigonal bipyramidal. The second (blue - bordered) is linear, third (orange - bordered) is see - saw or distorted, fourth (teal - bordered) is trigonal pyramidal or planar triangular (but with three, not five).

Answer:

The image with the green border (the top - most image among the four) represents a trigonal bipyramidal molecular geometry.