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Electricity and Magnetism
Calculate the number density of free electrons for (a) Mg

Calculate the number density of free electrons for (a) Mg (? = 1.74 g/cm3) and (b) Zn

Question:

Calculate the number density of free electrons for

(a) Mg (? = 1.74 g/cm3) and

(b) Zn (? = 7.1 g/cm3), assuming two free electrons per atom, and compare your results with the values listed in Table 27-1.

Transcribed Image Text:

Free-Electron Number Densities and Fermi Energies at T= 0 for Selected Elements NIV, Electrons/cm E, cV Element Al Aluminum 18.1 x 1022 11.7 Silver 5.50 Ag 5.86 x 1022 5.53 Au Gold 5.90 x 1022 7.04 Cu Copper 8.47 x 1022 Fe Iron 17.0 x 1022 11.2 K Potassium 1.4 x 1022 2.11 Li Lithium 4.70 x 1022 4.75 8.60 x 1022 Mg Magnesium Manganese 7.11 Mn 16.5 x 1022 11.0 Na Sodium 2.65 x 1022 3.24 14.8 x 1022 Sn Tin 10.2 Zn Zinc 13.2 x 1022 9.46

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a b n 2 N A M a n 2 602 10 23 174243 n 862 10 22 b n 1...View the full answer

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