Question

Why are the wave states in a band spread out in energy?    a.   More nodes...

Why are the wave states in a band spread out in energy?   

a.   More nodes in an oscillation corresponds to lower energy.   

b.   Fewer electrons in a wave state corresponds to lower energy.   

c.   More electrons in a wave state corresponds to lower energy..   

d.   Fewer nodes in an oscillation corresponds to lower energy.

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Answer #1

In solids, there are bands of possible energy states for the electrons, which exist as spread out waves. The states in a band have a range of different energies, but there are usually gaps b/w bands. The electrons sit in the lowest energy states except for a few which pick up enough thermal energy to go up some in Energy.

Correct option: c). More Electrons in a wave state corresponds to lower energy.

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