All Questions
Tagged with lattices inorganic-chemistry
8 questions
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2
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Why does Cs2SO4 have more lattice energy that Na2SO4?
My chemistry teacher told us that $\ce{NaF}$ has a higher lattice energy than $\ce{CsF}$. He explained it by telling lattice energy is inversely proportional to size of ions added. He then mentioned ...
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-1
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2
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151
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Why does density decrease when pressure is increased on an NaCl type lattice?
I was told that the effect of pressure on an NaCl type structure would make the atoms come closer and therefore change the type to CsCl type making Z (no of atoms per unit cell) go down, hence density ...
- 19
4
votes
1
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141
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Do superoxide salts of heavier alkali metals contradict the principle that lattice energy depends inversely on cation-anion distance?
I have a very basic understanding of quantitative lattice energy calculations: I only know that the lattice energy is directly proportional to the product of charges on the ions and inversely ...
- 193
8
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Why are there exactly 5 types of two-dimensional lattices, and what distinguishes them?
In the book Chemistry: The Central Science, they introduced the following 5 types of two-dimensional lattices:
The book said that the blue square represents the unit cell, the black dots are lattice ...
- 107
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77
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Why does malleability and ductility of interstitial carbides decrease?
Why does the malleability and ductility of interstitial carbides decrease? I read the following in my book, but I am not able to find what is the reason for the same. Why does this happen? Is it to do ...
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Finding the atomic packing factor (APF) of Sodium Chloride and other FCC ionic compounds
For a piece of coursework I am doing, I need to calculate the atomic packing factor of some ionic compounds. I have had no formal teaching in this area, so what I know comes from information I have ...
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2
votes
2
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200
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Calculate the lattice energy of ammonium carbonate
The lattice energy is a measure of the stability of a compound and I need this data for the ammonium carbonate ($\ce{(NH4)2CO3}$) but I don't know how to calculate and I can't find it anywhere. I know ...
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-2
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Electrical resistivity [closed]
I have read that in non-metals solids the electric resistivity is reduced if we increase temperature.But this isn't logical.I mean if temperature is increased ok the electrons get extra energy but as ...
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