What is meant by a polyatomic ion?

Answer 1

They are electrically charged species composed of more than one atom

Examples:

1. Monoatomic: Cl- chloride , S2- sulfide, Na+ sodium
2. Polyatomic: NH4+ ammonium, CO32- carbonate

Edit:

It is a tightly bound group of atoms that has a positive or negative charge and behaves as a unit.

Source: My Chemistry textbook. (Prentice Hall)

Answer 2

Monoatomic = 1 atom such as the Cl- ion.

Polyatomic = more than 1 atom such as Cl2 or H2O which are diatomic and triatomic respectively.
The means of polyatomic is a molecule, ion, radical formed from 2 or more atoms.

Answer 3

A polyatomic ion, also known as a molecular ion, is a charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit.

Answer 4

a tightly bound group of atoms that behaves as a unit and has a positive or negative charge

Answer 5

Polyatomic ions are a charged group of covalently bonded atoms.

Answer 6

Any positively charged ion containing more than one atom. Examples include the ammonium ion, NH4 +, the hydronium ion, H3O +, and the dioxygenyl ion, O2 +.

Answer 7

ions that have more than one atoms

eg: NH4+, SO42- etc.

Answer 8

A polyatomic ion has two or more atoms inside.

Answer 9

PO4^3-

APEX 2021