1. Elements:
* Metals: Most metals tend to lose electrons, becoming cations.
* Nonmetals: Some nonmetals can also form cations, but this is less common.
2. Molecules:
* Polyatomic Ions: These are groups of atoms bonded together that carry a net positive charge. Examples include:
* Ammonium ion (NH₄⁺)
* Hydronium ion (H₃O⁺)
Important Note:
* The charge of a cation is determined by the number of electrons lost.
* For example, a sodium atom (Na) loses one electron to become a sodium cation (Na⁺), while a magnesium atom (Mg) loses two electrons to become a magnesium cation (Mg²⁺).
Examples of Cations:
* Sodium ion (Na⁺)
* Calcium ion (Ca²⁺)
* Iron(II) ion (Fe²⁺)
* Aluminum ion (Al³⁺)
* Copper(I) ion (Cu⁺)
* Ammonium ion (NH₄⁺)
* Hydronium ion (H₃O⁺)
Remember, cations are essential components of ionic compounds, where they form electrostatic bonds with negatively charged anions (ions with negative charges).
