JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES

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Application +4 | -1

Calculate the number of states per cubic metre of sodium in

3 \mathrm{~s}

band. The density of sodium is

1013 \mathrm{~kgm}^{-3}

. How many of them are empty?

View answer and explanation

Correct option: A

5.3 \times 10^{28}, 2.65 \times 10^{28}

Option A (

5.3 \times 10^{28}, 2.65 \times 10^{28}

) is correct because it calculates the total number of states and the number of unoccupied states in the 3s band of sodium, based on its density and atomic mass.

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