Final answer:
The compounds (NH₄)₂SO₄, CaSO₄, NO, and Cu(OH)₂ are named ammonium sulfate, calcium sulfate, nitrogen monoxide, and copper(II) hydroxide, respectively, based on the ions they contain.
Step-by-step explanation:
The given compounds are examples of ionic and molecular compounds that have specific names based on their chemical compositions.
- (NH₄)₂SO₄ is ammonium sulfate.
- CaSO₄ is calcium sulfate.
- NO is nitrogen monoxide.
- Cu(OH)₂ is copper(II) hydroxide.
Each name is based on the combination of the cation and anion present in the compound. For example, the formula (NH₄)₂SO₄ consists of the ammonium ion (NH₄⁺) and the sulfate ion (SO₄²⁻), leading to the name ammonium sulfate. Similarly, the compound CaSO₄ is made up of calcium ions (Ca²⁺) and sulfate ions (SO₄²⁻), resulting in the name calcium sulfate. Molecular compounds like NO, consist of nonmetals and use prefixes to denote the number of atoms; however, the prefix mono- is often omitted for the first element.