Electron configuration is a term applied to chemical elements not to compounds.
In sodium chloride, sodium (Na) loses an electron to chlorine (Cl). Sodium donates an electron to chlorine in order to achieve a stable electron configuration, forming a sodium cation (Na+) and a chloride anion (Cl-).
in sodium chloride chlorine gains an electron and the bond formed between then is ionic.
In NaCl, there exists Na+ and Cl- ions and with the electron configuration of [He]2s22p6 (for Na+) and [Ne]3s23p6 (for Cl-)
Sodium and chloride ions bond together to form sodium chloride (table salt) due to electrostatic attraction between the positively charged sodium ion and the negatively charged chloride ion. This ionic bond is formed through the transfer of an electron from the sodium atom to the chlorine atom, resulting in the formation of a stable compound.
Sodium chloride has got electron configuration of 2,8,1. Potassium chloride has got electron configuration of 2,8,8,1. They behave identically in almost all the chemical reactions. But then you have potassium chloride molecule inside the cell. You need to have sodium chloride molecules out side the body cell to make them survive. If you get intravenous injection of sodium chloride, nothing will happen to you. If you give intravenous injection of potassium chloride, you will die instantly. How body cells recognize the difference between sodium chloride and potassium chloride in no time is the big question mark.
Sodium has the electron configuration of neon.
That is correct. A noble gas (or at least all the noble gas elements heavier than helium) has an electron configuration of 8 electrons in its outer shell, and the sodium and chlorine ions in sodium chloride also have 8 electrons in their outer shell, just like a noble gas atom.
accepts an electron to become the chloride anion, Cl-
Sodium fluoride has electron and ionic elements. This is taught in science.
The sodium atom becomes positively charged (Na+) after combining with chlorine to form sodium chloride (NaCl). This is because sodium donates one electron to chlorine to achieve a stable octet electron configuration.
When sodium and chlorine form an ionic bond, sodium loses an electron to achieve the electron configuration of neon (2,8), while chlorine gains an electron to achieve the electron configuration of argon (2,8,8). This results in the formation of a sodium ion (Na+) and a chloride ion (Cl-) which are attracted to each other by electrostatic forces to form an ionic bond.
Sodium is an element which has one electron in its outer electron shell, and which can obtain a more stable electron configuration by getting rid of that electron. This causes it to undergo chemical reactions with other elements such as oxygen or chlorine, which need to acquire electrons in order to obtain a more stable electron configuration. If sodium reacts with water, it is reacting with the oxygen in the water molecule. In the case of sodium chloride, the sodium has already reacted with chlorine to form that compound, and has given up its outer electron, so it no longer needs to react with oxygen in water.