Science Buddies: "Ask an Expert"

On my periodic table, there are multiple ionic charges listed for some elements. I assume this is because there are multiple possible ions. However, I have a homework question that asks for the ionic charge of an atom, and does not give a number of electrons. For example, a Sulfur ion: On my periodic table, it lists the charges 6, + or - 2, and 4. Are they all equally possible, or is there a "right" answer? If the latter, how do I know?

Thanks!

Hi,

This forum is intended for students, parents, and teachers working on K-12 science projects. If your question is related to a science project, please post some details such as your hypothesis, research question or experimental plan. If you are looking for help with homework or general science discussions there are other sites that should be able to answer your question.

A. Norman