What is the most positive oxidation state in which a Group 5A atom could be found? What is the most negative?

The most positive oxidation state in which a Group 5A atom (Group 15 on the periodic table) could be found is +5. This means that the atom has lost five electrons and has a charge of +5.

The most negative oxidation state in which a Group 5A atom could be found is -3. This means that the atom has gained three electrons and has a charge of -3.