tungsten is generally classified as a metal or nonmetal or metalloid.
tungsten is generally classified as a metal or nonmetal or metalloid.
is tungsten generally classified as a metal or nonmetal or metalloid?
metalloid
section::::comparison of properties.









































section::::comparison of properties.:overview.









































 properties of metals and nonmetals are quite distinct, as shown in the table below. metalloids, straddling the metal-nonmetal border, are mostly distinct from either, but in a few properties resemble one or the other, as shown in the shading of the metalloid column below and summarized in the small table at the top of this section.









































authors differ in where they divide metals from nonmetals and in whether they recognize an intermediate metalloid category. some authors count metalloids as nonmetals with weakly nonmetallic properties. others count some of the metalloids as post-transition metals.
properties of metals, metalloids and nonmetals
as a halogen, astatine tends to be classified as a nonmetal. it has some marked metallic properties and is sometimes instead classified as either a metalloid or (less often) as a metal. immediately following its production in 1940, early investigators considered it a metal. in 1949 it was called the most noble (difficult to reduce) nonmetal as well as being a relatively noble (difficult to oxidize) metal. in 1950 astatine was described as a halogen and (therefore) a reactive nonmetal. in 2013, on the basis of relativistic modelling, astatine was predicted to be a monatomic metal, with a face-centred cubic crystalline structure.
metalloid