Concept:Chemical bonds are categorized into primary (strong intramolecular forces) and secondary (weaker intermolecular forces).
Formula:$$ \text{Primary} = \text{Ionic, Covalent, Metallic} $$
Solution:- Primary bonds involve the actual transfer or sharing of electrons between atoms to form molecules or crystal lattices (e.g., Ionic, Covalent, and Dative/Coordinate bonds).
- Hydrogen bonds are secondary bonds. They are relatively weak dipole-dipole intermolecular forces that occur between already stable molecules, rather than forming the fundamental structure of the molecule itself.
Why other options are incorrect:- Option A, Option C, Option D: These all involve the sharing or transferring of valence electrons, strictly defining them as strong primary bonds.
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