Answer:
Option-C (NaCl) is the correct answer.
Explanation:
Ionic compounds are those compounds which are made up of oppositively charged ions held together strongly by Ionic bonds. The main reason of formation of ionic bond between two atoms is the electronegativity difference of more than 1.7 between them. Therefore, the electronegativity difference between Sodium and Chloride ions in NaCl is calculated as,
E.N of Chlorine = 3.16
E.N of Sodium = 0.93
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Difference 2.23
As the difference is greater than 1.7 hence, the bond will be ionic in nature.
While other all compounds are covalent in nature.
