* Electronegativity: Chlorine is much more electronegative than sodium. Electronegativity is the ability of an atom to attract electrons in a chemical bond. This means chlorine has a stronger "pull" on electrons.
* Electron Transfer: When sodium and chlorine come together, chlorine's stronger pull on electrons causes sodium to lose its outer valence electron. This electron is transferred to chlorine, which completes its outer shell of electrons.
* Formation of Ions: After the electron transfer, sodium becomes a positively charged ion (Na+) because it has lost an electron, and chlorine becomes a negatively charged ion (Cl-) because it has gained an electron.
* Electrostatic Attraction: The oppositely charged ions attract each other due to electrostatic forces, forming an ionic bond.
In summary: The difference in electronegativity between sodium and chlorine leads to the transfer of an electron from sodium to chlorine, forming positively charged sodium ions and negatively charged chloride ions. These oppositely charged ions are then held together by electrostatic attraction, resulting in an ionic bond.
