The properties a semiconductor lie between those of conductor and insulator. Germanium has four valence electrons. It is a semiconductor. On the other hand, aluminium and gold are metals. Germanium has good electrical and mechanical properties. At certain temperature, germanium provides many free electrons.
If you just type "<span>What is the chemical formula for mercury(I) nitrate?" into google you get the answer but HG(NO3)2 is the correct one. sorry no one helped you in time hope you passed anyway</span>
