Final answer:
Examples of inhibitors include sodium nitrite, molybdate, and certain forms of phosphorus, but not magnesium. Other known inhibitors are hydrogen cyanide and nitric acid. Formulas for ions and ionic compounds include Na3P for sodium phosphide and Cr2O3 for chromium (III) oxide.
Step-by-step explanation:
In chemistry, inhibitors are substances that slow down or prevent a chemical reaction. Examples of inhibitors from the list provided would include sodium nitrite (NaNO2), molybdate (a compound containing the molybdate ion, MoO42-), and certain forms of phosphorus that can act as flame or inhibit oxidation processes. Magnesium (Mg), however, is generally not considered an inhibitor but rather an essential element involved in numerous biochemical reactions as a cofactor.
Additional compounds not listed but also known as inhibitors include hydrogen cyanide (HCN), which can inhibit certain enzymes; nitric acid (HNO3), used for passivation of stainless steel; and potassium bromide (KBr), which can inhibit the corrosion of metals. The correct formula for given ions would include bromide ion (Br-), phosphate ion (PO43-), cupric ion (Cu2+), and magnesium ion (Mg2+). For ionic compounds, examples are sodium phosphide (Na3P), iron (II) nitrite (Fe(NO2)2), calcium hydrogen phosphate (CaHPO4), and chromium (III) oxide (Cr2O3).