UNIT 8.4 - Polar Bonds and Molecules

dispersion forces are weaker than hydrogen bonds. T or F?

true

if the electronegativity difference between two atoms is greater than 1.8, they will form an ionic bond. T or F?

true

in general, the electronegativity values of nonmetallic elements are greater than the electronegativity of values of metallic elements. T or F?

true

when the atoms in a bond are not the same, the bonding electrons are shared ____ and the bond is _____

unequally polar

vanderwaals forces

used to describe the weakest intramolecular actions. these include dispersion forces and dipole interactions

the attractions between opposite poles of polar molecules are called ____

electronegative

when like atoms are joined by a covalent bond, the bonding electrons are shared ____ and the bond is _____

equally nonpolar

in a polar covalent bond, the more electronegative atom has a slight positive charge. T or F?

false

nonpolar covalent bond

a bond formed when the atoms in a molecule are alike and the bonding electrons are shared equally

polar covalent bond

a bond formed when two different atoms are joined by a covalent bond and the bonding electrons are shared unequally

polar molecule

a molecule in which one end is slightly positive and the other end is slightly negative

network solid

a substance in which all of the atoms are covalently bonded to each other