Strongest bond in chemistry

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Strongest bond in chemistry ionic ,covalent or metallic?Bond strength decrease in the following order covalent > ionic > metallic so i think strongest bond would be covalent bonding then comes ionic bonding and at last metallic bonding.Correct me if i am wrong.One more question is water/ice molecular solid or covalent solid ?My teacher says there is nothing separate type of solid called covalent solid .(According to my teacher metallic solid is same as covalent solid.)instead there is covalent network solid. I think covalent solid and covalent network solid is same thing ,they differ from metallic solid due to a fact that in metallic solid there are atoms of metal on each crystal lattice point but in covalent solid or covalent network solid there are atoms but of nonmetals on each lattice point. especially of carbon.Am i right?in molecular solid (crystal) there are molecules on each crystal lattice point,so water should be molecular solid.
 
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It tends to be a matter of difficulty deciding whether ionic or covalent bonds are stronger among the chemistry community. Generally, people who think ionic bonds are stronger point to melting point decomposition. Table salt, for example, has a very high melting point and decomposition temperature. Those who think covalent bonds are stronger sometimes point to dissolution or weak ionic bonds, but neither of these are proper explanations. Most chemists I've talked to say ionic bonds are stronger, and biochemists might tell you covalent bonds are stronger because in biological systems, ionic interactions are not nearly as important as covalent.

Water is a molecular solid because it's solid interactions come from hydrogen bonding, not covalent bonding.
 

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