Final answer:
SiO⁴⁴⁺, S²⁺, and CO³²⁺ are all anions with negative charges, being part of various ionic compounds, not cations.
Step-by-step explanation:
The species SiO⁴⁴⁺, S²⁺, and CO³²⁺ are all anions, not cations. Anions are negatively charged ions, which means they have gained one or more electrons. Specifically, SiO⁴⁴⁺ is a silicate ion, S²⁺ is a sulfide ion, and CO³²⁺ is a carbonate ion. These ions are typically found in various ionic compounds where they are paired with positive ions or cations.
Examples of ionic compounds featuring these anions include calcium sulfate (CaSO₄), where the sulfate ion is SO₄²⁺, and sodium sulfide (Na₂S), comprising the sulfide ion. Another example is lithium silicate (Li₂SiO₃) which contains a different form of silicate ion (SiO³²⁺).
When naming ionic compounds, it is important to consider the charge on both the cation and the anion to determine the correct formula for the chemical compound.