1.Put the ionic compounds in order of smallest to largest lattice energy LiCl Al2O3 KCl SrS 2. A____bond is the result of nonmetals having high ionization energies A_____bond has non-localized electrons A_____bond results due to decrease in potential energy when opposite charged species come together Solution 1. Higher charge and smaller size of ions result in compounds with large lattice energy. Of the given compounds, Al 2 O 3 has Al 3+ and O 2- have largest charge and thus highest lattice energy. Next SrS has Sr 2+ and S 2- which is the next highest charge present in the list. Then comes LiCl and KCl. Of these, Li + has smaller size than K + and thus it will have a higher lattice energy. Thus the final order of lattice energy is, Al 2 O 3 > SrS > LiCl > KCl (highest to lowest) 2. A covalent bond is a result of non-metals having high ionization energies. Hence they do not ionize but share electrons. . A pi bond has non-localized electrons. The pi-electrons form a diffused cloud in the molecule that can be easily distorted. A ionic bond results due to decrease in potential energy when oppositely charged ions come together. Mutual electrostatic attraction is what keeps the molecule together. .

1. 1.Put the ionic compounds in order of smallest to largest lattice energy LiCl Al2O3 KCl SrS
2. A____bond is the result of nonmetals having high ionization energies
A_____bond has non-localized electrons
A_____bond results due to decrease in potential energy when opposite charged species come
together
Solution
1. Higher charge and smaller size of ions result in compounds with large lattice energy.
Of the given compounds, Al 2 O 3 has Al 3+
and O 2-
have largest charge and thus highest lattice
energy.
Next SrS has Sr 2+
and S 2-
which is the next highest charge present in the list.
Then comes LiCl and KCl. Of these, Li +
has smaller size than K +
and thus it will have a higher
lattice energy.
Thus the final order of lattice energy is,
Al 2 O 3 > SrS > LiCl > KCl (highest to lowest)
2. A covalent bond is a result of non-metals having high ionization energies.
Hence they do not ionize but share electrons.
. A pi bond has non-localized electrons.
The pi-electrons form a diffused cloud in the molecule that can be easily distorted.
A ionic bond results due to decrease in potential energy when oppositely charged ions come
together.

2. Mutual electrostatic attraction is what keeps the molecule together.