For example, when sodium (Na) and chlorine (Cl) atoms react, the sodium atoms lose one electron each to the chlorine atoms. This results in the formation of sodium ions (Na+) and chloride ions (Cl-). The sodium ions are attracted to the chloride ions, and vice versa, forming the ionic compound sodium chloride (NaCl).
The formation of ionic compounds is driven by the following factors:
* Electronegativity: Electronegativity is the ability of an atom to attract electrons. The greater the difference in electronegativity between two atoms, the more likely they are to form an ionic compound.
* Ionization energy: Ionization energy is the energy required to remove an electron from an atom. The lower the ionization energy of an atom, the more likely it is to form a positive ion.
* Electron affinity: Electron affinity is the energy released when an atom gains an electron. The greater the electron affinity of an atom, the more likely it is to form a negative ion.
Ionic compounds typically have high melting points and boiling points, and are good conductors of electricity when dissolved in water. They are also typically solids at room temperature.
