* Sodium (Na): Sodium has one electron in its outermost shell. It wants to lose this electron to achieve a stable electron configuration like the noble gas Neon (Ne).
* Chlorine (Cl): Chlorine has seven electrons in its outermost shell. It wants to gain one electron to achieve a stable electron configuration like the noble gas Argon (Ar).
The Reaction:
1. Electron Transfer: The sodium atom loses its outermost electron, becoming a positively charged sodium ion (Na+). This electron is then transferred to the chlorine atom, which becomes a negatively charged chloride ion (Cl-).
2. Ionic Bond: The oppositely charged ions (Na+ and Cl-) attract each other electrostatically, forming an ionic bond. This strong electrostatic attraction holds the ions together in a crystal lattice structure.
Key Points:
* Octet Rule: Both sodium and chlorine achieve a stable electron configuration by following the octet rule, which states that atoms tend to gain, lose, or share electrons to have eight electrons in their outermost shell.
* Ionic Compound: The resulting compound, sodium chloride, is an ionic compound. Ionic compounds are formed by the electrostatic attraction between positively and negatively charged ions.
In Summary: The reaction between sodium and chlorine involves the transfer of an electron from sodium to chlorine, forming ions that are then held together by an ionic bond.
