2 Na (s) + Cl 2 (g) → 2 NaCl (s)
NaCl is salt of strong acid and strong base. It is highly soluble in water.
A combination reaction is one in which two or more substances (the reactants) are combined directly to form a single product (the product). Sodium (Na) combines with chlorine (Cl2) to form sodium chloride, or table salt (NaCl) is an example of combination reaction.