Is the Calculation of Lattice Energy Correct at Time 2:40 in This Video?

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In the following video,is he right at time at time 2:40

I don't think so .Because lattice energy of fe2o3 should be 36 times greater than Nacl (without considering radius factor)
 
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I think I have got my answer.He is right.in fe2o3 ,we will have to take product of charge per ion which is 6 (-2 on oxygen and +3 on iron)