2: The Fermi energy in silver is 5.51 eV. (A) What is the average energy of the free electrons in silver at 0 K? (b) What temperature is necessary for the average molecular energy in an ideal gas to have this value? (c) What is the speed of an electron with this
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Answered by
6
Answer:
Given data:
E(F) = 5.51 ev
To find:
Average energy of free e- in silver = ?
The formula to find the number of free electrons in silver is.
E = 3/5 E(F)
E = 5/3 x 5.51
E = 3.306 eV
Hence the average energy of the free electrons in silver at 0 k is 3.306 eV.
Explanation:
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Answered by
2
Answer:
(A) 3.306ev.
(B) T=2.55×10⁴ K
(C) 1.078× m/s
Explanation:
E(F)= 5.51 eV
Part A:
Formula for calculating average energy of free electrons at 0K,
=3.306ev.
Part B:
Formula for average molecular energy in an ideal gas in terms of temperature,
On solving,
T=2.55×10⁴ K
Part C:
Formula for Speed of the electron at 0K (Fermi Energy)
Speed=V(F)=
Speed of electron=1.078× m/s
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