The ionic compound CaO crystallizes with the same structure
as so...

Question

The ionic compound CaO crystallizes with the same structure
as sodium chloride (Figure 8.3). (a) In this structure,
how many O2- are in contact with each Ca2+ ion (Hint: Remember
the pattern of ions shown in Figure 8.3 repeats over
and over again in all three directions.)

Accepted Answer

Hi everyone here. We have a question telling us that magnesium sulfide has a face centered cubic type lattice in this structure. How many sulfide are in contact with each magnesium? So a space centered cubic type lattice is a cube and it has an atom in each corner plus the face of each side, so each atom is touching six other atoms. So our answer here is six. Thank you for watching. Bye.

The ionic compound CaO crystallizes with the same structure as sodium chloride (Figure 8.3). (a) In this structure, how many O2- are in contact with each Ca2+ ion (Hint: Remember the pattern of ions shown in Figure 8.3 repeats over and over again in all three directions.)

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