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+// Scilab Code Ex6.2: : Page-6.19 (2009)
+clc; clear;
+e = 1.6e-019; // Energy equivalent of 1 eV, J/eV
+E_F = 2.0*e; // Fermi level of Po, J
+m = 9.1e-031; // Mass of an electron, kg
+// As E_F = 1/2*m*v^2, solving for v
+v = sqrt(2*E_F/m); // Velocity of electron at Fermi level, m/s
+printf("\nThe Velocity of electron at Fermi level = %4.2e m/s", v);
+
+// Result
+// The Velocity of electron at Fermi level = 8.39e+05 m/s