<Tr> <Td> Structure C.N. </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> PbCl 9 </Td> <Td> </Td> <Td> SrBr 8 </Td> <Td> SrBr 8 </Td> <Td> </Td> <Td> </Td> <Td> SrI 7 </Td> <Td> </Td> <Td> </Td> <Td> SrI 7 </Td> <Td> SrI 7 </Td> <Td> </Td> </Tr> <Tr> <Td> Diiodide </Td> <Td> LaI metallic </Td> <Td> CeI metallic </Td> <Td> PrI metallic </Td> <Td> NdI high pressure metallic </Td> <Td> </Td> <Td> SmI </Td> <Td> EuI </Td> <Td> GdI metallic </Td> <Td> </Td> <Td> DyI </Td> <Td> </Td> <Td> </Td> <Td> TmI </Td> <Td> YbI </Td> <Td> </Td> </Tr> <Tr> <Td> Color m.p. ° C </Td> <Td> </Td> <Td> bronze 808 </Td> <Td> bronze 758 </Td> <Td> violet 562 </Td> <Td> </Td> <Td> green 520 </Td> <Td> green 580 </Td> <Td> bronze 831 </Td> <Td> </Td> <Td> purple 721 </Td> <Td> </Td> <Td> </Td> <Td> black 756 </Td> <Td> yellow 780 </Td> <Td> Lu </Td> </Tr> <Tr> <Td> Structure C.N. </Td> <Td> CuTi 8 </Td> <Td> CuTi 8 </Td> <Td> CuTi 8 </Td> <Td> SrBr 8 CuTi 8 </Td> <Td> </Td> <Td> EuI 7 </Td> <Td> EuI 7 </Td> <Td> 2H - MoS 6 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> CdI 6 </Td> <Td> CdI 6 </Td> <Td> </Td> </Tr>

Where do the names lanthanide and actinide come from