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Ilia_Sergeevich [38]
3 years ago
15

How many formula units are in the unit cell shown for li2s??

Chemistry
1 answer:
alexdok [17]3 years ago
4 0
Li2S or Lithium Sulfide has a antifluorite crystal structure. This structure has FCC lattice cations filling tetrahedral holes with anions. The FCC structure contains 4 atoms per unit cell and a coordination number of 12.   

This substance easily reacts to form H2S which produces the rotten egg smell. 
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The number of polar covalent bonds in<br> NH₃ is?
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Kindly check the explanation section.

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Therefore, the total charge balance is given as:

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