What chemical reaction occurs when sodium chloride is formed?

The following reactions would give sodium chloride as one of the products.

1. Sodium burns in chlorine gas.
2Na(s) + Cl₂(g) → 2NaCl

2. Neutralization between sodium hydroxide and hydrochloric acid.
NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l)

3. Reaction between hydrochloric acid and sodium carbonate / sodium hydrogencarbonate.
Na₂CO₃(s/aq) + 2HCl(aq) → 2NaCl(aq) + H₂O(l) + CO₂(g)
NaHCO₃(s/aq) + HCl(aq) → NaCl(aq) + H₂O(l) + CO₂(g)

4. Reaction between hydrochloric acid and sodium sulphite / sodium hydrogensulphite.
Na₂SO₃(s/aq) + 2HCl(aq) → 2NaCl(aq) + H₂O(l) + SO₂(g)
NaHSO₃(s/aq) + HCl(aq) → NaCl(aq) + H₂O(l) + SO₂(g)

It is a redox reaction (oxidation and reduction reaction). Sodium loses one electron to become Na+ and chlorine gains that electron to become Cl-. The attractive force holding the Na and Cl ions together is a coulombic attraction of positive attracting negative.

its called transition to sodium chloride