The inorganic compound formed between Sodium Na and Chlorine Cl is Sodium Chloride NaCl . This compound is ionic in nature.The reasoning behind this classification is based on the difference in electronegativity between the two elements. Sodium is a metal with an electronegativity of 0.93, while Chlorine is a non-metal with an electronegativity of 3.16. The difference in electronegativity between these two elements is 3.16 - 0.93 = 2.23.In general, when the electronegativity difference between two elements is greater than 1.7, the bond formed between them is considered ionic. Ionic bonds occur when one atom transfers electrons to another atom, resulting in the formation of positively charged cations and negatively charged anions, which are held together by electrostatic forces.In the case of Sodium Chloride, Sodium loses one electron to achieve a stable electron configuration, forming a positively charged Na+ ion. Chlorine gains one electron to achieve a stable electron configuration, forming a negatively charged Cl- ion. The electrostatic attraction between these oppositely charged ions results in the formation of an ionic compound, NaCl.