1s2 2s2 2p6 3s2 3p5
-1
1s2 2s2 2p6 3s2 3p6 is the electron configuration of chlorine
positively
in sodium chloride chlorine gains an electron and the bond formed between then is ionic.
Chlorine's charge would be negative because it gained an electron, which results in it having an extra negative charge.
Magnesium
-1
1s2 2s2 2p6 3s2 3p6 is the electron configuration of chlorine
positively
in sodium chloride chlorine gains an electron and the bond formed between then is ionic.
Chlorine typically gains one electron to form a stable chloride ion. This process involves the attraction of one electron.
Chlorine's charge would be negative because it gained an electron, which results in it having an extra negative charge.
Chlorine's charge after accepting an electron is -1, as it gains one negative charge when it accepts an electron to achieve a stable electron configuration.
A charged chlorine atom, or a chlorine ion, would have gained or lost an electron. If it gained an electron, it would have a charge of -1. If it lost an electron, it would have a charge of +1.
The electron configuration of chlorine is 1s2 2s2 2p6 3s2 3p5
A stable electron configuration for a chlorine ion can be achieved by gaining one electron. This would give the chlorine ion a full outer shell of electrons. The symbol for a stable chlorine ion with an extra electron would be Cl-.
Electron affinity of chlorine is far grater than oxygen. For oxygen, its value is 141 KJ/mole whereas for Chlorine, it is 349 KJ/mole. Thus, adding an electron is more favourable in case of a gaseous chlorine atom