Which of the following answer choices represents a typical anion

This question is incomplete

Explanation:

This question is incomplete but generally, anions are ions that are made up of an atom or group of atoms (polyatomic) that are negatively charged. The first thing one should look out for when trying to identify an anion is the negative charge. Examples of anions include Cl⁻, O²⁻, N³⁻, NO₃⁻, SO₄²⁻, PO₄³⁻and AsO₄³⁻.

We can observe physical properties of elements and compounds without changing the substance.

Examples of physical properties: Density, color, boiling point, state of matter, appearance: dull or shiny, etc. 

But we can also observe and measure chemical properties by reacting a substance with something else. For example, like mixing baking soda and vinegar together. The vinegar reacts with the baking soda and produces carbon dioxide: a new substance. 

Some examples of chemical properties: Flammability, amount of heat that is released during combustion, toxicity (how much damage it causes to other organisms), radioactivity, and ability to oxidize (when you have metal that becomes rusty looking).