* Sodium (Na) is a metal with one valence electron (electron in its outermost shell). It readily loses this electron to achieve a stable electron configuration.
* Chlorine (Cl) is a nonmetal with seven valence electrons. It readily gains one electron to achieve a stable electron configuration.
When sodium and chlorine react, sodium loses its valence electron, becoming a positively charged ion (Na+). Chlorine gains this electron, becoming a negatively charged ion (Cl-). These oppositely charged ions are then attracted to each other through electrostatic forces, forming an ionic bond. This bond creates sodium chloride (NaCl), commonly known as table salt.
The reaction can be represented by the following equation:
2Na(s) + Cl2(g) → 2NaCl(s)
In summary, the reaction occurs because:
* Sodium and chlorine have a large difference in electronegativity, with sodium being more electropositive and chlorine being more electronegative.
* This difference in electronegativity leads to the transfer of an electron from sodium to chlorine, resulting in the formation of ions.
* The attraction between the oppositely charged ions drives the reaction forward.
The reaction is highly exothermic, meaning it releases energy in the form of heat and light.
