Question

if a pair of electrons is unequally shared between two atoms, a(n) ______ bond occurs.
single covalent
hydrogen
triple covalent
polar covalent
double covalent

Explanation:

In a polar covalent bond, electrons are unequally shared between atoms due to differences in electronegativity. Single, double, and triple covalent bonds just describe the number of electron - pair bonds between atoms without addressing unequal sharing. A hydrogen bond is a weak attraction between a hydrogen atom and an electronegative atom and is not related to unequal sharing of a pair of electrons between two bonded atoms.

Answer:

polar covalent