How does the electronic structure of an element determine whether it is classified as a metal or a non-metal?

The electronic structure of an element influences its classification as a metal or non-metal based on the number of outer electrons. Metals typically have fewer outer electrons, allowing them to lose electrons easily and form positive ions, while non-metals have more outer electrons, making it easier for them to gain electrons and not form positive ions.

This answer is strong because it directly connects the electronic structure to the behavior of elements in terms of ion formation, which is key to understanding the distinction between metals and non-metals. The question tests the student's understanding of how atomic structure influences chemical properties.