Which of the following is correct?

Question

Question

This question was previously asked in

BHEL Engineer Trainee Mechanical 24 Aug 2023 Official Paper

Answer 1

CONCEPT:

Primary bonds are strong chemical bonds that involve the actual sharing or transfer of electrons between atoms. Examples include covalent, ionic, and metallic bonds.
Secondary bonds are weaker intermolecular forces, such as hydrogen bonding, dipole-dipole interactions, and van der Waals forces.
Metallic bonds involve delocalized electrons shared across a lattice of metal atoms and are considered primary due to their strength and electron-sharing nature.

EXPLANATION:

Incorrect – Covalent bonds are primary bonds formed by sharing electrons between atoms.
Incorrect – Hydrogen bonds are secondary bonds, arising due to dipole interactions involving hydrogen.
Incorrect – Ionic bonds, involving electron transfer between atoms, are primary and very strong.
Correct – Metallic bonds are primary bonds formed due to the electrostatic attraction between delocalized electrons and metal ions.

Therefore, the correct answer is: Option 4) Metallic bond is a primary bond.