Search

Ions

Definition

An ion is an atom or group of atoms that has an electric charge. Ions with a positive charge are called cations. Ions with a negative charge are called anions.

Many normal substances exist in the body as ions. Common examples include sodium, potassium, calcium, chloride, and bicarbonate. (See: Electrolytes )

Ions can be created using radiation such as x-rays. Ionizing radiation is often used for diagnostic or therapeutic procedures.

Related topics:

Alternative Names

Cations; Anions

Information

Media

    Encyclopedia content is provided as information only and not intended to replace the advice and instruction from your personal physician.