What is an ion made of two or more atoms called?

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Multiple Choice

What is an ion made of two or more atoms called?

Explanation:
An ion made of two or more atoms is a polyatomic ion. It’s a charged species where multiple atoms are covalently bonded together and the entire group carries a net charge, acting as a single unit in reactions. This distinguishes it from monatomic ions like Na+ or Cl−, which are single atoms with a charge. Common examples include ammonium (NH4+) and sulfate (SO4^2−). The other terms refer to different ideas: an ionic compound is a whole substance made of ions held together by electrostatic forces, a Lewis structure is a diagram showing valence electrons, and metallic bonding describes the bonding in metals with delocalized electrons.

An ion made of two or more atoms is a polyatomic ion. It’s a charged species where multiple atoms are covalently bonded together and the entire group carries a net charge, acting as a single unit in reactions. This distinguishes it from monatomic ions like Na+ or Cl−, which are single atoms with a charge. Common examples include ammonium (NH4+) and sulfate (SO4^2−).

The other terms refer to different ideas: an ionic compound is a whole substance made of ions held together by electrostatic forces, a Lewis structure is a diagram showing valence electrons, and metallic bonding describes the bonding in metals with delocalized electrons.

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