What is the difference between a cation and an anion? How are they formed? Give the names and symbols of one cation and one anion.

Cations are those which are positively charged ions and it is formed by losing of one or more electron by an atom. For eg: Sodium loses 1 electron to form sodium ion Na⁺ ion

Anions are those which are negatively charged ions and it is formed by gaining of one more electrons by an atom. For eg; Chlorine gains one electron and form chlorine ion Cl^- ion