This page explains what a polyatomic ion is and uses particle diagrams and formulae to determine the number of electrons (and protons) in a polyatomic ion. A table of names and formulae for several …

Often, a polyatomic ion can be considered as the conjugate acid or base of a neutral molecule. For example, the conjugate base of sulfuric acid (H 2 SO 4) is the polyatomic hydrogen sulfate anion …

Some ions consist of groups of atoms covalently bonded together and have an overall electric charge. Because these ions contain more than one atom, they are called polyatomic ions. The structures, …

Jan 8, 2026 · There are 46 Polyatomic Ions, ranging from Acetate to Thiosulfate. Each entry is organized with Formula,Charge,Common salt/acid so you can scan formulas, see the usual charge, …

A polyatomic ion is a molecular ion; a covalent compound (formed from multiple atoms from different elements) with a charge. A monoatomic ion is an ion composed of a single atom.

Sep 27, 2014 · This polyatomic ions list contains many common polyatomic ions grouped by charge. Each entry contains the ion's name, molecular formula and chemical structure.

Sep 2, 2025 · The term “polyatomic” signifies that it is composed of two or more atoms, unlike monatomic ions which are single charged atoms, such as Na⁺ or Cl⁻. These multiple atoms are held …

Polyatomic ions are ions that consist of multiple atoms and both ionic and covalent bonding. These polyatomic ions will act as discrete units (a group of bonded atoms with an overall charge).

Table of Polyatomic Ions Some Metallic Cations