Question

question 7 of 10
which of the following values best classifies a bond between 2 atoms as being covalent?

a. an electronegativity difference of greater than 1.7 between the atoms
b. an electronegativity difference of greater than 2.7 between the atoms
c. an electronegativity difference of less than 1.7 between the atoms
d. an electronegativity difference of less than 2.7 between the atoms

Explanation:

To determine a covalent bond, we use electronegativity differences. Ionic bonds typically have an electronegativity difference greater than 1.7, while covalent bonds (including polar and non - polar) have a difference less than 1.7. Option A describes an ionic - like difference. Option B's 2.7 is not the standard cutoff for covalent. Option D's less than 2.7 is too broad as ionic bonds can have differences between 1.7 and 2.7 in some cases, but the key cutoff for covalent is less than 1.7. So option C is correct.

Answer:

C. An electronegativity difference of less than 1.7 between the atoms