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3.2: Ions - Chemistry LibreTexts
The number of each type of ion is indicated in the formula by the subscript. Most of the elements that make ionic compounds form an ion that has a characteristic charge. For example, sodium makes ionic compounds in which the sodium ion always has a 1+ charge.
1.17: Ions - Chemistry LibreTexts
1.17: Ions. As discussed in the previous section, the number of protons in an atom determines to which element an atom belongs. If the number of protons changes (as you will in see in unit 2 can happen during nuclear reactions) the identity of the atom changes.
Ion | Definition, Chemistry, Examples, & Facts | Britannica
Ion, any atom or group of atoms that bears one or more positive or negative electrical charges. Positively charged ions are called cations; negatively charged ions, anions. Ions migrate under the influence of an electrical field and are the conductors of electric current in electrolytic cells.
ION Definition & Meaning | Dictionary.com
An atom or a group of atoms that has an electric charge. Positive ions, or cations, are formed by the loss of electrons; negative ions, or anions, are formed by the gain of electrons.
What Is an Ion? Chemistry Definition - Science Notes and Projects
In chemistry, the definition of an ion is an electrically charged atom or molecule. This means the atom or molecule has an unequal number of protons and electrons. Neutrons carry no net electrical charge, so they don’t affect ions directly.
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