foxstudy
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In chemistry, we've learnt that ionic bonds are stronger than covalent.
In biology, we've learnt that covalent bonds are stronger than ionic.

????

OR why is there this difference?
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username3829136
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covalent bonds are stronger

There are strong covalent bonds between the atoms, but weak inter molecular forces between the molecules
Last edited by username3829136; 1 year ago
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poiuytewq
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There are a number of things to consider when thinking about this:1. Ionic bonds are generally strong due to the attraction of oppositely charged ions. Covalent bonds are also strong due to the attraction from each nuclei to the valence electrons.2. However the intermolecular bonds in most covalent compounds are very weak, they often only have instantaneous-induced dipole bonding, so will exist as gases at room temp.3. Ionic compounds exist in giant lattice structures rather than diatomic molecules so will exist as solids with high melting points.4. However some covalent compounds can exist as a giant covalent network, such as in diamond. This is where all carbon atoms are bonded to 4 other carbon atoms and this makes a very strong compound with extremely high melting points.However, in terms of the pure strength of the intra-molecular bonds (between atoms in a molecule), covalent bonds are stronger.
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foxstudy
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(Original post by poiuytewq)
There are a number of things to consider when thinking about this:1. Ionic bonds are generally strong due to the attraction of oppositely charged ions. Covalent bonds are also strong due to the attraction from each nuclei to the valence electrons.2. However the intermolecular bonds in most covalent compounds are very weak, they often only have instantaneous-induced dipole bonding, so will exist as gases at room temp.3. Ionic compounds exist in giant lattice structures rather than diatomic molecules so will exist as solids with high melting points.4. However some covalent compounds can exist as a giant covalent network, such as in diamond. This is where all carbon atoms are bonded to 4 other carbon atoms and this makes a very strong compound with extremely high melting points.However, in terms of the pure strength of the intra-molecular bonds (between atoms in a molecule), covalent bonds are stronger.
How though? Surely ionic are as they have a full positive and negative charge whereas in covalent bonding, the atoms would have a slightly positive and slightly negative charge??
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