When in elemental form, atoms of sodium lose electrons to atoms of chlorine, forming ions (this occurs in a 1:1 ratio). These ions are attracted by the electric difference between them and form a salt.
Your phrasing is slightly off. It does not require ions to form sodium chloride; that compound is made from atoms of sodium and chlorine (one of each). Once the compound is formed, the sodium and chlorine then become ions, Na+ and Cl-.
All sodium atoms, whether or not they are ions have 11 protons.
why atoms of group 0 elements do not form ions
Negative ions form when atoms GAIN valence electrons.
+1 ions.
When in elemental form, atoms of sodium lose electrons to atoms of chlorine, forming ions (this occurs in a 1:1 ratio). These ions are attracted by the electric difference between them and form a salt.
Your phrasing is slightly off. It does not require ions to form sodium chloride; that compound is made from atoms of sodium and chlorine (one of each). Once the compound is formed, the sodium and chlorine then become ions, Na+ and Cl-.
The ions of course, due to its high reactivity
All sodium atoms, whether or not they are ions have 11 protons.
Sodium chloride contains sodium and chlorine ions, which are electrically charged atoms.
Sodium atoms lose their single valence band electron becoming positive sodium ions. Chlorine atoms gain a single electron filling the empty space in their valence band becoming negative chloride ions. The oppositely charged ions attract each other electrostatically. The ions can readily form a solid cubic crystal held together by this electrostatic charge, but the ions freely disperse in water forming a solution of isolated sodium ions, isolated chloride ions, and water molecules.
why atoms of group 0 elements do not form ions
Sodium nitride (Na3N) has 3 sodium atoms in the formula unit.
Modern chemical terminology doesn't use the phrase molecule in connection with sodium chloride because it is an ionic compound. Atoms can be bound by ionic, covalent or metallic bonds. Only those bound by covalent bonds form molecules. An example is water. Two hydrogen atoms are bound by covalent bonds to an oxygen atom to form a water molecule, H2O. Water consists of enormous numbers of these tiny, separate particles. Sodium and chlorine bond by the transfer of electrons from the sodium atoms to the chlorine atoms. This results in positive sodium ions and negative chloride ions which form a three dimensional lattice of alternating ions. There is no individual 'NaCl' in this giant structure.
Chloride ions would form elements with ions of metallic elements. For example, with sodium ions, chloride ions form sodium chloride.
Negative ions form when atoms GAIN valence electrons.