(b) Indicate how many states exist in each band on your diagram

(c) Indicate how many electrons occupy each band on your diagram

(d) Is sodium a conductor, semiconductor or insulator? Justify your answer with reference to your band diagram

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2. (a) E Consider a piece of sodium. Use the symbol N to represent the number of sodium atoms.[7 marks] Draw a band diagram for sodium. Indicate the atomic orbital(s) that contributed to the band(s) in your diagram. [3 marks] II 3s 2p 2s 1s 2. (a) E Consider a piece of sodium. Use the symbol N to represent the number of sodium atoms.[7 marks] Draw a band diagram for sodium. Indicate the atomic orbital(s) that contributed to the band(s) in your diagram. [3 marks] II 3s 2p 2s 1s

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