00:01
Okay, the question asks, which ionic compound would be expected to have the highest lattice energy? so the lattice energy is basically the energy that used to hold those irons together to form the solid.
00:25
So we know for the ionic compound, you have the katein and an anise.
00:36
Ketyne has a positive charge, anion has negative charge.
00:43
So basically the interaction between the katein and anion is the electrostatic interaction.
01:01
So basically when they ask you the lattice energy, it asks you about how strong this electrostatic interaction is.
01:09
So from physics we know for an electrostatic interaction, the interaction, the force, right, the interaction strength, the force of the electric static interaction equals to what? equals to q1 times q2 over some constant times r square.
01:32
So as you can see, what determines the strengths? the charge that the particle carries, the larger the charge, the larger the larger the force here.
01:47
And the second one, another one is the radius, the distance between two charges.
01:54
The smaller the distance, the larger the interaction.
01:59
So for high lattice energy for this ironic solid, what you want to, what kind criteria that solid should have? so you should have large charge and smaller radius.
02:18
So you have to make sure they satisfy these two criteria...