Question 3 0.5 pts Which of the following statements about solids is incorrect?

Question

Question 3 0.5 pts Which of the following statements about solids is incorrect? Packing efficiency increases as the volume of empty space decreases Packing efficiency is related to how many atoms are in a given volume in a solid. If a solid can form more than one possible crystal structure, the one with the highest packing efficiency will have the highest density (g/cm3) Packing efficiency calculates the percentage of empty space occupied in a solid Packing efficiency increases in the order; Simple cubicBCC

Explanation / Answer

Question 1

PE = volume of atoms / volume of cell *100

PE increases as the volume of empty space decreases... true

PE is related to how many atoms.... yes the formula of PE is about atoms

The solid with the highest PE will have the highest density, yes because density is mass / volume, if the mass increases (volume occupied) the density will increase

Packing efficiency calculate empty space in a solid, this is imprecise, the formula calculates the volume occupied in a solid, it is true that you can calculate the empty space from it but the PE does no calculate this number directly.

P.E increses in the order FCC > BCC > simple cubic

*just 1 question at a time =)

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