Question

Electronegativity of element X is 2.20 and electronegativity of element Y is 2.55. The compound formed between them is covalent.

• A. Covalent compound
• B. Ionic compound

Answer 1

The correct option is A

Covalent compound

If the difference in the electronegativity values of elements in a compound is 1.7 or greater, the compound is generally ionic compounds and if it is less than 1.7, the compound is generally a covalent compound.

The difference in electronegativity of constituent elements is $2.55-2.0=0.55<1.7$
Hence the compound formed is covalent in nature.