The covalent bond is the strongest.
Boranes have covalent bonds.
As a metal actinium has metallic bonds.
Water has covalent bonds.
Sulfur has covalent bonds with nonmetals.
The first is covalent bonding, the second is ionic bonding. Both involve ions. Google 'covalent' and 'ionic' for specific definitions. :)
ionic bonds
Covalent bonding is the type of bonding not sure about the attraction though.
Amino acids form peptide bonds when bonding with one another.
Neither. Calcium atoms are held together by a third type of strong bonding - metallic bonding. Calcium forms ionic bonds with non-metals only. Metallic bonding involves electrons being free to move around amongst the calcium atoms.
sigma bonds
Ionic bonding.
Boranes have covalent bonds.
Water molecules are associated by hydrogen bonds but I suppose that these bonds are not the weakest.
covalent bonds
covalent bonds
Sulfur has covalent bonds with nonmetals.
Covalent bonds.