<Tr> <Td> 69 </Td> <Td> 83 </Td> <Td> bismuth </Td> <Td> Bi </Td> <Td> </Td> <Td> 0.048 </Td> <Td> 0.025 </Td> <Td> </Td> <Td> 0.0085 </Td> <Td> 10,200 </Td> </Tr> <Tr> <Td> 70 </Td> <Td> 52 </Td> <Td> tellurium </Td> <Td> Te </Td> <Td> </Td> <Td> 0.005 </Td> <Td> 0.001 </Td> <Td> </Td> <Td> 0.001 </Td> <Td> 2,200 </Td> </Tr> <Tr> <Td> 71 </Td> <Td> 78 </Td> <Td> platinum </Td> <Td> Pt </Td> <Td> </Td> <Td> 0.003 </Td> <Td> 0.0037 </Td> <Td> </Td> <Td> 0.005 </Td> <Td> 172 </Td> </Tr> <Tr> <Td> 72 </Td> <Td> 79 </Td> <Td> gold </Td> <Td> Au </Td> <Td> </Td> <Td> 0.0011 </Td> <Td> 0.0031 </Td> <Td> </Td> <Td> 0.004 </Td> <Td> 3,100 </Td> </Tr>

What is the heaviest element in earth's structure