If two atoms have an electronegativity difference of 1.3, what type of bond would form between them?

a. polar covalent
b. nonpolar convalent
c. ionic

The correct answer is b polar covalent

Explanation:

When two atoms joined by covalent bond has difference in their electronegativities at that time polarity arise.

    When the electronegativity difference is low such as 1.3 then the polar bond formed by the two atoms are called polar covalent bond.For example H2O

 on the other hand polar bond formed by two atoms having high difference in their electronegativities is called ionic bond.For example NaCl.

yes it is balanced

the volume increases