The energy gap of germanium is given as approximately:

1. Germanium conducts more readily than silicon at room temperature. 2. That follows from having the smaller gap of the two. 3. For C, Si and Ge the energy gaps are 5.4 eV, 1.1 eV and 0.7 eV respectively. 4. So germanium is about 0.7 eV. _Source: syllabus Physics Part II, Ch 14 'Semiconductor Electronics'_