Linus Pauling noticed that the energy of a polar bond is often greater than expected.He attributed the greater bond energy to
A) a coulombic attraction between atoms with partially positive and negative charges.
B) the greater bond lengths of the heteronuclear bonds.
C) one of the many unexplainable phenomena that scientists encounter.
D) the ability of heteronuclear species to form double and triple bonds.
E) the greater number of valence electrons found in heteronuclear molecules.

Question

Quizplus · Accepted Answer

Pauling's observation that the energy of a polar bond is greater than expected is explained by the coulombic attraction between atoms with partially positive and negative charges. This is the result of the electronegativity difference between the two atoms in the bond, which creates a dipole moment and polar covalent bond. The electrostatic attraction between the partially positive and negative charges increases the bond energy.

Linus Pauling Noticed That the Energy of a Polar Bond