polar covalent bond
nounUK /ˈpəʊlə kəʊˈveɪlənt bɒnd/
US /ˈpoʊlər koʊˈveɪlənt bɑnd/
A polar covalent bond is a bond where two atoms share electrons but one atom pulls them closer.
The bond between hydrogen and oxygen in water is a polar covalent bond.
OTHER MEANINGS
2. A chemical bond in which shared electrons are pulled more toward the more electronegative atom.
Hydrogen chloride has a polar covalent bond because chlorine attracts the shared electrons more strongly.
3. A bond with partial positive and partial negative charges on its atoms.
The polar covalent bond in water gives each molecule a slight charge at its ends.
4. A covalent bond that sits between a pure covalent bond and an ionic bond.
The polar covalent bond in ammonia is stronger than a nonpolar bond but weaker than a full ionic bond.