Which term includes the symbol for the element surrounded by dots?

• A. Valence electrons
• B. Electron dot diagram
• C. Ion
• D. Polyatomic ions

Answer: (B)

The main idea here is how we visually represent an element’s outer electrons. The symbol for an element with dots around it shows the valence electrons—the electrons in the outermost shell—so you can see how many electrons are available for bonding. This specific depiction is called an electron dot diagram, which is the standard way to illustrate valence electrons around an element’s symbol (it’s also known as a Lewis dot diagram). The other terms don’t describe a diagram: valence electrons are the electrons themselves, not the diagram; an ion is a charged particle, and polyatomic ions are groups of atoms with charge. So the term that includes the symbol surrounded by dots is the electron dot diagram.