Question

7. If the Debye's temperature
of a metal is 450 K, the
Debye's frequency is​

Answer 1

Answer:

no 1 answer is wrong tell correct one

Answer 2

Answer:

The Debye's frequency is​ 4.7 kJ/kmol-K

Explanation:

The Debye model, created by Peter Debye in 1912, is a technique for calculating the phonon contribution to the specific heat (or heat capacity) in a solid. It is used in thermodynamics and solid-state physics. In contrast to the Einstein photoelectron model, which views the solid as a collection of distinct, non-interacting quantum harmonic oscillators, it regards the vibrations of the atomic lattice (heat) as phonons in a box. The low-temperature dependency of the heat capacity of solids is accurately predicted by the Debye model.

At high temperatures, it restores the Dulong-Petit rule just like the Einstein photoelectron model does. However, its accuracy at intermediate temperatures diminishes as a result of simplifying assumptions. Consideration of the atoms as separate quantum harmonic oscillators is the key to the Einstein model's simplicity. Peter Debye envisioned the collective motion of atoms as sound waves rather than autonomous oscillators.

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