Answer: Ions and electrons
Explanation:
An atom is the smallest unit of ordinary matter that forms a chemical element. Example: Fe
Ions are the charged species which resukts when a neutral atom gains or loses electrons. Example: [tex]Na^+[/tex]
Electron is the negatively charged particle which is present in the shells outside the nucleus. Example: [tex]e^-[/tex]
A molecule is formed when two or more atoms are held together by chemical bonds. Example : [tex]O_2[/tex]
