The most stabilising force for nucleic acids is?

A non-covalent interaction differs from a covalent bond in that it does not involve the sharing of electrons, but rather involves more dispersed variations of electromagnetic interactions between molecules Non-covalent interactions can be classified into different categories, such as electrostatic, p-effects, van der Waals forces, and hydrophobic effects. Non-covalent interactions are critical in maintaining the three-dimensional structure of large molecules, such as proteins and nucleic acids Nucleic Acids are also Stabilized by Base Pairing & Stacking. Ref: Biochemistry by U. Satyanarayana 3rd edition Pgno : 69