<Tr> <Th> Group </Th> <Th> Material </Th> <Th> Symbol </Th> <Th> Band gap (eV) @ 302 K </Th> <Th> Reference </Th> </Tr> <Tr> <Td> IV </Td> <Td> Diamond </Td> <Td> </Td> <Td> 5.5 </Td> <Td> </Td> </Tr> <Tr> <Td> IV </Td> <Td> Silicon </Td> <Td> Si </Td> <Td> 1.11 </Td> <Td> </Td> </Tr> <Tr> <Td> IV </Td> <Td> Germanium </Td> <Td> Ge </Td> <Td> 0.67 </Td> <Td> </Td> </Tr>

Where will an electron bound in an atom have the largest electrical potential energy