Question

A molecule with the formula AB₃ has a trigonal planar geometry how many electron groups are in the central atom express as an integer.

How many electron groups are on the central atom?

Answer 1

A molecule with formula AB3 and trigonal planar geometry has three electron groups on the central atom, arranged in an equilateral triangle shape, with an example being BF3.

Step-by-step explanation:

For a molecule with the formula AB₃ that has a trigonal planar geometry, there are three electron groups on the central atom.

These electron groups are arranged 120° apart in a plane, which creates the trigonal planar shape. This configuration is noted as AX3, where 'A' represents the central atom and 'X' represents the surrounding atoms or bonding pairs (BP). An example of a molecule with this geometry is BF3 (Boron trifluoride), where the central boron atom is surrounded by three fluorine atoms.