entropies of elements
Which will have a higher entropy lead or silicon and why?
Don't they both form cristal structures?
My task is to put given elements in increasing entropy order. I'm quite confiden't about most of it, except for lead and silicon.
Is this order correct?
1. lead/silicon
2. lead/silicon
3. bromine (liquid)
4. neon (monoatomic gas)
5. oxygen (diatomic gas)
Don't they both form cristal structures?
My task is to put given elements in increasing entropy order. I'm quite confiden't about most of it, except for lead and silicon.
Is this order correct?
1. lead/silicon
2. lead/silicon
3. bromine (liquid)
4. neon (monoatomic gas)
5. oxygen (diatomic gas)
Original post by a fresh student
Which will have a higher entropy lead or silicon and why?
Don't they both form cristal structures?
My task is to put given elements in increasing entropy order. I'm quite confiden't about most of it, except for lead and silicon.
Is this order correct?
1. lead/silicon
2. lead/silicon
3. bromine (liquid)
4. neon (monoatomic gas)
5. oxygen (diatomic gas)
Don't they both form cristal structures?
My task is to put given elements in increasing entropy order. I'm quite confiden't about most of it, except for lead and silicon.
Is this order correct?
1. lead/silicon
2. lead/silicon
3. bromine (liquid)
4. neon (monoatomic gas)
5. oxygen (diatomic gas)
I'd go with lead as it has more electrons (so more permutations of excited states)
I'd reverse 4 and 5. Ne is more disordered and dispersed. Putting two O atoms together is indicative of a decrease in entropy.
Silicon is more ordered and crysalline than lead. Lead is just a mishmash of positive ions and electrons. Plus the electrons are delocalised. Silicon has no delocalised electrons and forms a giant covalent structure, where each Si atom is tetrahedrally arranged with respect to the others. This is indicative of a much higher degree of order, i.e. a lower entropy.
Silicon is more ordered and crysalline than lead. Lead is just a mishmash of positive ions and electrons. Plus the electrons are delocalised. Silicon has no delocalised electrons and forms a giant covalent structure, where each Si atom is tetrahedrally arranged with respect to the others. This is indicative of a much higher degree of order, i.e. a lower entropy.
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