The heart bonds between friends are unbreakable.

Multiple bonds are important in organic chemistry.

Many animals form strong pair bonds with their mates.

The court issued peace bonds to ensure the safety of the community.

Sigma bonds are formed by the overlap of atomic orbitals.

Single bonds are the strongest type of chemical bond.

The molecule contains multiple π bonds.

The molecule contains multiple pi bonds.

Valence bonds are formed when atoms share electrons.

I have won several Premium Bonds.