Problem 6.204

Calculate the electronic gas pressure in metallic sodium, at \(T=0,\) in which the concentration of free electrons is \(n=\) \(=2.5 \cdot 10^{22} \mathrm{~cm}^{-3} .\) Use the equation for the pressure of ideal gas.

p=2 / 3 n \quad\langle T\rangle=\left(\pi \sqrt[3]{9 \pi} \hbar^{2} / 5 m\right) n^{5 / 3} \approx 5 \cdot 10^{4} \text { atm. }

Molecules and Crystals