What is the symbol of anion and cation?

An anion is a negatively charged ion, while a cation is a positively charged ion. Their symbols are represented using element symbols along with their charge.

Symbol of Cation (+ Charge)

A cation is formed when an atom loses electrons and carries a positive charge. The symbol is written as the element symbol followed by the charge.

• Sodium ion (Na⁺)
• Calcium ion (Ca²⁺)
• Iron(III) ion (Fe³⁺)
• Ammonium ion (NH₄⁺)

Symbol of Anion (- Charge)

An anion is formed when an atom gains electrons and carries a negative charge. The symbol is written as the element symbol followed by the charge.

• Chloride ion (Cl⁻)
• Oxide ion (O²⁻)
• Sulfide ion (S²⁻)
• Nitrate ion (NO₃⁻)

The charge on an ion depends on the number of electrons lost or gained, and these symbols help in understanding chemical reactions and compound formation.