<Tr> <Td> 74 </Td> <Td> tungsten </Td> <Td> 2, 8, 18, 32, 12, 2 </Td> </Tr> <Tr> <Td> 106 </Td> <Td> seaborgium </Td> <Td> 2, 8, 18, 32, 32, 12, 2 </Td> </Tr> <P> Most of the chemistry has been observed only for the first three members of the group . The chemistry of seaborgium is not very established and therefore the rest of the section deals only with its upper neighbors in the periodic table . The elements in the group, like those of groups 7--11, have high melting points, and form volatile compounds in higher oxidation states . All the elements of the group are relatively nonreactive metals with a high melting points (1907 ° C, 2477 ° C, 3422 ° C); that of tungsten is the highest of all metals . The metals form compounds in different oxidation states: chromium forms compounds in all states from − 2 to + 6: disodium pentacarbonylchromate, disodium decacarbonyldichromate, bis (benzene) chromium, tripotassium pentanitrocyanochromate, chromium (II) chloride, chromium (III) oxide, chromium (IV) chloride, potassium tetraperoxochromate (V), and chromium (VI) dichloride dioxide; the same is also true for molybdenum and tungsten, but the stability of the + 6 state grows down the group . Depending on oxidation states, the compounds are basic, amphoteric, or acidic; the acidity grows with the oxidation state of the metal . </P> <Table> <Tr> <Td> </Td> <Td> This section needs expansion . You can help by adding to it . (February 2012) </Td> </Tr> </Table>

8) what is the common characteristic of the group vi metal ions