Question

The Fermi Energy fo a gevn solid is 5 eV at T=0K. What is the average energy of the electron in the metal. Select one: a. 5 eV b. 2 eV c. 3 eV d. 0 eV

Answer 1

Predict which substance in each pair will have higher boiling and

melting points.

melting points.

Explanation:

Answer 2

Answer:

Option d) 3 eV

Explanation:

Given,

Fermi energy at 0 K temperature, Ef= 5 eV.

• Fermi energy is the maximum kinetic energy an electron can attain at 0 K temperature. It is constant for each solid.

According to the quantum mechanical free electron model,

The average energy, E, of an electron in the metal is:

$E = \frac{3}{5} Ef$

$E =\frac{3}{5}*5$

E = 3 eV

RESULT: Hence, the average energy of an electron in the metal is 3 eV.