Which of the following molecules has a single covalent bond formed by the sharing of one electron pair between two atoms
A single covalent bond involves sharing one electron pair. In H₂ , two hydrogen atoms share one pair of electrons, forming a single bond.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Hydrogen Bonding and Resonance and Dipole Moment