00:02
Okay, so the question asked to rank the lattice energy.
00:10
Looking at those compounds, you will find all those compounds are ionic crystals.
00:19
So which means the lattice energy are mainly composed of the electric, electrostatic interactions.
00:36
Which means it's basically the interaction between charges, right? charge and the positive charge.
00:45
The interaction.
00:46
The stronger the interaction, the larger of the lattice energy.
00:53
So for the electrostatic interactions, if you have learned physics, fundamental fix, you know, right? the static interaction, the force would be equal to some constant times the charge q1, q2, of two objects over r square.
01:18
So you can see the strength of the force, right, statis static force is determined by the charge and radius or the distance between the charges.
01:32
So here, right, in the atom or the irons corresponds to the charge that iron carries...