Hint: To know the weakest bond among the given all the optional bonds, we should go through all the given bonds, the bonds which are highly electronegative in nature are the weakest. And we will discuss more about the weakest bond.
Complete step by step answer:
The Hydrogen bonds are the weakest as they aren’t really bonds but just forces of attraction to the dipoles. On a hydrogen atom which are permanent and bonded to two atoms which are highly electronegative in nature. They are just electrostatic and not an actual physical bond which makes them very easy to simply bypass.
A hydrogen bond is a primarily electrostatic force of attraction between a hydrogen $ (H) $ atom which is covalently bound to a more electronegative atom or group, particularly the second-row elements nitrogen $ (N) $ , oxygen $ (O) $ , or fluorine $ (F) $ —the hydrogen bond donor (Dn)—and another electronegative atom bearing a lone pair of electrons—the hydrogen bond acceptor (Ac). Such an interacting system is generally denoted $ Dn-H\cdot\cdot\cdot $ , where the solid line denotes a polar covalent bond, and the dotted or dashed line indicates the hydrogen bond. The use of three centered dots for the hydrogen bond is specifically recommended by the IUPAC.
Hydrogen securities can be intermolecular (happening between isolated particles) or intramolecular (happening among parts of a similar atom). Contingent upon the idea of the giver and acceptor molecules which comprise the bond, their calculation, and climate, the energy of a hydrogen bond can differ somewhere in the range of 1 and $ 40{\text{ }}kcal/mol $ . This makes them to some degree more grounded than a van der Waals cooperation, and more fragile than completely covalent or ionic bonds. This kind of bond can happen in inorganic atoms like water and in natural particles like DNA and proteins.
Hence, the correct option is (D.) Hydrogen bond.
Note:
Hydrogen bonding, interaction involving a hydrogen atom located between a pair of other atoms having a high affinity for electrons; such a bond is weaker than an ionic bond or covalent bond but stronger than van der Waals forces.
