Table salt is sodium chloride and have Na+ and Cl- ions. They have the electronic configuration of Ne and Ar respectively and both have 8 valence electrons.
The chloride ion has eight valence electrons.
The chloride ion in table salt has 8 electrons in its outermost energy level. This is because it has gained an extra electron to achieve a full octet of 8 electrons, making it a stable, negatively charged ion.
The element that has 7 valence electrons and is a nonmetal is chlorine (Cl). Chlorine is found in Group 17 of the periodic table, also known as the halogens. It is a highly reactive element and commonly forms compounds, such as sodium chloride (table salt), by gaining an electron to achieve a stable electron configuration.
Because their valence shells are full after they bond and don't have "free electrons" to bond with whatever they come into contact with.
It is not a mixture; it is a compound. It is what's called an ionic compound, because the sodium atoms lose their 1 valence electron and the chlorine atoms pick up that electron to fill their outer energy level, giving them 8 valence electrons instead of 7 (7 is their normal number of valence electrons.)The sodium atoms now have one less electron than protons, so they form a +1 ion and the chlorine atoms have one more electron than proton, so they form -1 ions. Since the ions have opposite charges, they are attracted to each other and form NaCl, or sodium chloride (table salt).
The closer the number of valence electrons is to the number required to completely fill or deplete its outer shell the more likely the atom is to react. With other electrons in an atom the shells are full and they have little if any affect on the reactivity of an atom. Valence electrons are the only electrons that are available to be shared/transferred in a bond.
But the reason only certain elements(atoms) can bond with only specific types is because of their valence electrons. The number of valence electrons depends if the element can bond with the other. The number you want to remember is 8. You can combine Na(sodium) and Cl(Chlorine). Na has 1 valence electron and Cl has 7 valence electrons, when you combine them they will have 8 valence electrons. The process takes alot of energy to combine them. NaCl you would know as sodium Chlorine or known as table salt. There are more complicated ways called covalent bonds but thet is the basic reason only certain elements bond. Remember, ionic bonds form between metals and nonmetals.
Chlorine is number 17 in the periodic table, so using the electron shell arrangement,2:8:7:It has 7 electrons in its valance shell so its charge becomes Cl7+ when these 7 electrons are 'donated' (= lost to, as reductant) to oxygen (only in oxyacid or salt perchlorate).Other valence values are +5, +3 and +1 in oxyacids: chlorate, chlorite and hypochlorite, respectively.
Group-14 elements share electrons. They have 4 valence electrons.They neither gain nor loose electron.Elements like Carbon, Silicon has 4 valence electrons. They are in the 14th group. They do not gain or lose electrons.
Sodium Chloride, NaCl, or table salt, is an ionic compound, so it is setup in a sort of 3d grid form. If you were to apply pressure it, the atoms would attempt to stay in the grid form to continue sharing valence electrons, but with no avail. It is not malleable, it it very brittle.
There are 8 electrons in the outermost energy level of a chlorine ion in table salt. Chlorine typically has 7 electrons in its outer shell, but when it becomes an ion in table salt, it gains an extra electron to achieve a full outer shell of 8 electrons.
Table 'Salt' is NaCl Sodium Chloride and is not a proton donor has it has no hydrogen to donate