Ionic Compounds with Polyatomic Ions

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What is an ionic compound?

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An ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. They typically form between metals and nonmetals.

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What are polyatomic ions?

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Polyatomic ions are ions that consist of two or more atoms bonded together, which carry a net charge. Examples include sulfate (SO₄²⁻) and ammonium (NH₄⁺).

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How do you name ionic compounds containing polyatomic ions?

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When naming ionic compounds with polyatomic ions, the name of the cation (positive ion) is stated first, followed by the name of the polyatomic ion. For example, K₂SO₃ is named potassium sulfite.

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What is the formula for potassium sulfite?

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The formula for potassium sulfite is K₂SO₃.

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What is the charge of the ammonium ion?

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The charge of the ammonium ion (NH₄⁺) is +1.

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How do you determine the formula for ionic compounds?

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To determine the formula for ionic compounds, balance the total positive and negative charges of the ions involved. For example, in calcium nitrite (Ca(NO₂)₂), calcium has a +2 charge and each nitrite has a -1 charge.

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What is the correct name for NaF?

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The correct name for NaF is sodium fluoride.

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What is the formula for calcium nitrite?

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The formula for calcium nitrite is Ca(NO₂)₂.

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What is the correct formula for ammonium phosphite?

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The correct formula for ammonium phosphite is (NH₄)₃PO₃.

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How do you identify cesium nitrate?

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Cesium nitrate is identified by its formula CsNO₃.