Final answer:
Electron acceptors can be arranged in order from highest to lowest energy based on their electron affinities. Electron affinity increases from left to right across a period and decreases from top to bottom within a group in the periodic table.
Step-by-step explanation:
The electron acceptors can be arranged in order from highest to lowest energy based on their electron affinities. Electron affinity is the energy change that occurs when an electron is added to a neutral atom to form a negative ion. Generally, electron affinity increases from left to right across a period and decreases from top to bottom within a group in the periodic table.
For example, chlorine has a higher electron affinity than sulfur because chlorine is further to the right in the periodic table. Similarly, sulfur has a higher electron affinity than phosphorus because sulfur is higher up in its group. Using this information, you can arrange the electron acceptors in order from highest to lowest energy.