Silver has a Fermi level (energy)of 5.5 eV.At 0 K,at what speed would the electrons be moving if they had kinetic energy equal to the Fermi energy? (This speed is known as the Fermi speed.)(m_el = 9.11 × 10^-31 kg,1 eV = 1.60 × 10^-19 J,h = 6.626 × 10^-34 J • s)

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Quizplus · Accepted Answer

The Fermi speed can be calculated using the formula v_F = sqrt(2 * E_F / m_el), where E_F is the Fermi energy in joules. Converting 5.5 eV to joules gives E_F = 5.5 * 1.60 × 10^-19 J. Plugging in the values, v_F = sqrt(2 * 5.5 * 1.60 × 10^-19 J / 9.11 × 10^-31 kg) ≈ 1.4 × 10^6 m/s = 1400 km/s.

Silver Has a Fermi Level (Energy)of 5