The correct name for K2SO4 is Group of answer choices potassium sulfite.

The correct name for K2SO4 is Group of answer choices potassium sulfite. potassium tetrasulfoxygen. potassium sulfide. potassium sulfate.

The Correct Answer and Explanation is:

The correct name for K₂SO₄ is potassium sulfate.

Explanation:

K₂SO₄ is a chemical compound consisting of potassium (K) and the polyatomic ion sulfate (SO₄²⁻).

Step-by-step breakdown:

1. Potassium (K):
   • Potassium is an alkali metal found in Group 1 of the periodic table.
   • It forms a +1 ion (K⁺) when it loses one electron.
2. Sulfate Ion (SO₄²⁻):
   • The sulfate ion is a common polyatomic ion with the formula SO₄²⁻.
   • It consists of one sulfur atom bonded to four oxygen atoms.
   • The overall charge on the sulfate ion is -2.
3. Balancing Charges:
   • Each potassium ion carries a +1 charge.
   • The sulfate ion carries a -2 charge.
   • To balance the overall charges, two potassium ions are needed for every sulfate ion.
   • This gives the formula K₂SO₄.
4. Naming the Compound:
   • The name of an ionic compound comes from the name of the cation (metal) followed by the name of the anion (non-metal or polyatomic ion).
   • The metal, potassium, keeps its elemental name.
   • The polyatomic ion, SO₄²⁻, is called sulfate.
   • Therefore, K₂SO₄ is named potassium sulfate.

Why Other Options Are Incorrect:

• Potassium sulfite: Incorrect. Sulfite has the formula SO₃²⁻, not SO₄²⁻.
• Potassium tetrasulfoxygen: Incorrect. There is no such standard nomenclature term as tetrasulfoxygen.
• Potassium sulfide: Incorrect. Sulfide refers to S²⁻, not the polyatomic sulfate ion.

Thus, based on correct chemical nomenclature, the correct name for K₂SO₄ is potassium sulfate.