Final answer:
Aluminum forms the Al³+ cation, while nitrogen forms the N³- anion in an ionic compound named aluminum nitride (AlN). Other elements form ions with predictable charges based on their positions in the periodic table, such as rubidium (1+), barium (2+), chlorine (1-), and selenium (2-). Neon does not form ions.
Step-by-step explanation:
When aluminum and carbon react to form an ionic compound, aluminum, with its three valence electrons, will lose these electrons to adopt a charge of 3+. The symbol for this ion is Al³+. In contrast, carbon will gain four electrons to fill up its valence shell, forming an anion with a charge of 4-. However, in this lesson, we focus on aluminum and nitrogen. Nitrogen, due to its position in group 15 of the periodic table, will gain three electrons and form an anion with a charge of 3-. The chemical formula for the compound formed between aluminum and nitrogen is AlN, aluminum nitride. By following the trends of the periodic table, we can determine that other elements such as rubidium will form a cation with a 1+ charge and barium will form a cation with a 2+ charge, due to their positions in groups 1 and 2, respectively. Neon does not form an ion because it is a noble gas with a full valence shell. Chlorine, being a halogen in group 17, will form an anion with a charge of 1-. Selenium, being in group 16, will form an anion with a charge of 2-. The remainder of the question regarding 'NHACH' appears to be a typo and is not a recognized compound or nomenclature in IUPAC standards.