It would actually be metal, metalloid, and nonmetals!!! :)
metal--> nonmetal --> metalloid
Generally, non-metals have/are: - low electrical conductivity - low thermal conductivity - lower density - brittle (in solid form) - dull (in solid form) - low melting points and low boiling points - high electronegativity - negative valency They also form they form acidic oxides, whereas metals form basic oxides.
A non-metal, butlook inyour science book. :)
Nails are metal.
The gas phase of matter (where the atoms or molecules are far apart) is usually a poorer conductor than the solid or liquid phases no matter what element the gas is made from. The conductivity of a metal is imbued by the fact that in the solid or liquid states the metallic elements have electrons that are free to pass from atom to atom (to flow). When these atoms are separated one from another (as in a gas) the electrons can not do this. Thus you can not tell if a gas is made from a metal simply on the basis of its electrical conductivity.
It would help if you specify whether you are talking about thermal conductivity, or electrical conductivity. Diamond certainly doesn't has the highest electrical conductivity. Its thermal conductivity is one of the highest known, and - if a synthetic diamond is made from pure (99.9%) C-12, it is indeed the highest. The Wikipedia article attributes this to a strong covalent bonding.
When metal corrodes, it forms an ionic bond with some corrosive nonmetal such as oxygen or sulfur, and once it forms such a bond, its valence electrons become tremendously less mobile, since they are caught by the nonmetal. The high electrical conductivity of metal depends upon the mobility of the valance electrons.
Metalloids
Examples: malleability, ductility, thermal conductivity, electrical resistivity, solid state, magnetism, high melting point, etc.
Metals are generally good conductors of electricity.
metal--> nonmetal --> metalloid
That would be water.
metals, because if you read it also says conductivity, an that is how well something transfirs. eltricity
Because it is a nonmetal
At room temperature, silver has the highest electrical and thermal conductivity of all the (known) metals. Note that diamond, an allotrope of carbon, is a poor electrical conductor but is several times better as a thermal conductor than silver. Carbon is a nonmetal, of course, but it was worth mentioning as both a comparison and a curiousity.
Not soluble in water (probably only a slow reaction), soluble in acids.
Hydrogen has the highest thermal conductivity of any gas. The electrical conductivity of hydrogen varies according to temperature. If it is cold enough, it can be a superconductor. If it is hot enough, as a plasma, it is highly conductive.