Sodium Atom (Na)
* Neutral Charge: It has 11 protons (positively charged) and 11 electrons (negatively charged), resulting in a neutral overall charge.
* Electron Configuration: Its electron configuration is 2, 8, 1. This means it has one electron in its outermost shell (valence shell).
* Reactivity: Sodium atoms are highly reactive because they want to lose that single valence electron to achieve a stable, full outer shell.
* State: Sodium atoms are found as a soft, silvery-white metal at room temperature.
Sodium Ion (Na+)
* Positive Charge: A sodium atom loses its single valence electron to become a sodium ion. Now it has 11 protons and only 10 electrons, giving it a net positive charge of +1.
* Electron Configuration: The electron configuration of the sodium ion is 2, 8. It now has a full outer shell, making it more stable.
* Reactivity: Sodium ions are much less reactive than sodium atoms because they are already stable.
* State: Sodium ions are usually found in ionic compounds (salts) and dissolved in water, contributing to the properties of the solution.
In Summary:
The key difference is that a sodium atom is neutral and has one valence electron, while a sodium ion has a positive charge and has a full outer shell (it has lost its valence electron). This difference in charge and electron configuration makes sodium ions much more stable and less reactive than sodium atoms.
