What is relation between lattice energy and covalent character
Answers
In complex terms we can't ever really describe something as been fully ionic or fully covalent but more of a mix of the two. For example, a HCl molecule will have a small amount of ionic bonding character even though we define it as covalent bonding. This is besides the point though... in this case, we generally assume ionic bonds are stronger than covalent.
In complex terms we can't ever really describe something as been fully ionic or fully covalent but more of a mix of the two. For example, a HCl molecule will have a small amount of ionic bonding character even though we define it as covalent bonding. This is besides the point though... in this case, we generally assume ionic bonds are stronger than covalent.If you increased the covalent bonding character in a species you are likely to decrease the ionic bonding character resulting in a lower melting point as forces of attraction are now weaker. However, we do see additional bonding occur in species such as vulcanised rubber where you get cross-linking between carbon atoms on adjacent chains. This then obviously increases the melting point as you have not reduced any ionic bonding character
Relation between lattice energy and covalent character:
1) Lattice energy is defined as the energy required to separate a mole of an ionic solid compound into its gaseous ions.
2) Covalent character of a compound define as the partial sharing of the electrons in the compound which have ionic binding.
3) As we all know very well that the ionic bond is stronger than the covalent bond.
4) So here the relation between the lattice energy and covalent character is direct.
5) More the covalent character of any compound then more energy will be required to change it into its gaseous form so more will be the lattice energy required.