What must the difference in electronegativity between two atoms be in order for the bond between them to be nonpolar covalent? exactly 0 greater than 1.7 less than 0.4 between 0.4 and 1.7

## Step 1<br />The problem is asking for the difference in electronegativity between two atoms for the bond between them to be nonpolar covalent. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. <br /><br />## Step 2<br />When two atoms form a covalent bond, they share a pair of electrons. If the two atoms have the same electronegativity, they will share the electrons equally, and the bond is nonpolar covalent. <br /><br />## Step 3<br />The difference in electronegativity between two atoms determines the polarity of the bond. If the difference is exactly 0, the bond is nonpolar covalent. If the difference is greater than 1.7, the bond is ionic. If the difference is less than 0.4, the bond is nonpolar covalent. If the difference is between 0.4 and 1.7, the bond is polar covalent.