Heavy metals are metallic elements with densities exceeding 5 g/cm3.
Trömel and Hübner subsequently extended their work on metallic elements to nonmetallic elemental structures with similar results.
Biosorbents are cheaper, more effective alternatives for the removal of metallic elements, especially heavy metals from aqueous solution.
Usually they are metal oxides (that is, compounds of metallic elements and oxygen), but many ceramics (especially advanced ceramics) are compounds of metallic elements and carbon, nitrogen, or sulfur.
The rare-earth metals are neither weak nor especially strong metallic elements, and they do exhibit some modest ductility.
He also applied his hypothesis to metals and assigned atomic weights to 17 metallic elements based upon analyses of particular compounds that they formed.
Most solid catalysts are metals or the oxides, sulfides, and halides of metallic elements and of the semimetallic elements boron, aluminum, and silicon.
The presence of the metallic elements suggests the presence of a mixed metal oxide pigment [58].
Carson Glover, the director of worldwide media relations at Tiffany, said that a metal "is defined as an alloy of two or more metallic elements".
A logarithmic value of 0.07 is equivalent to an actual metallicity ratio of 1.17, so the star is about 17% richer in metallic elements than the Sun.
They are given the general chemical formula M(FexOy), M representing other metallic elements than iron.
