Table : table 2.1 Chemical Bonds and Interactions
NameBasis of interactionStructureBond energya
Covalent bondSharing of electron pairsimage50–110
Ionic attractionAttraction of opposite chargesimage3–7
Hydrogen bondElectrical attraction between a covalently bonded H atom and an electronegative atomimage3–7
Hydrophobic interactionInteraction of nonpolar substances in the presence of polar substances (especially water)image1–2
van der Waals interactionInteraction of electrons of nonpolar substancesimage1

aBond energy is the amount of energy in kcal/mol needed to separate two bonded or interacting atoms under physiological conditions.