Identify the group 5A element(s) that best fits each of the following descriptions.
(b) Forms stable salts containing M3+ ions

Group 5A elements, also known as Group 15 in the periodic table, include nitrogen, phosphorus, arsenic, antimony, and bismuth. These elements have five valence electrons and exhibit a range of oxidation states, which influence their chemical behavior and the types of compounds they can form.

The M3+ ion refers to a cation formed when a Group 5A element loses three electrons. The stability of these ions is crucial for the formation of stable salts. For example, aluminum (Al) from Group 3A can form stable Al3+ ions, while certain Group 5A elements can also form stable M3+ ions under specific conditions.

Salts are ionic compounds formed from the neutralization reaction between an acid and a base. In the context of M3+ ions, stable salts can be formed when these cations combine with anions, such as halides or sulfates. The stability of the resulting salt depends on the charge and size of the ions involved.