Silicon is a non metal
None of the above. Thiamin is a compound and the terms metal, nonmetal and metalloid apply to elements.
Lutetium is a metal. It is a rare earth metal that is part of the lanthanide series on the periodic table.
Plastic is a type of material known as a polymer, which is a nonmetal in terms of its composition. It is not classified as a metal or a metalloid (semimetal).
Silicon is a metalloid, which is a mix between metal and a non-metal.
Neptunium beryllide (NpBe3) is a solid chemical compound (not metal, nonmetal or metalloid).
Silicon is a metalloid.
Uranium is a metal, rather than a nonmetal, or metalloid.
Nails are metal.
nonmetal
metalloid
metalloid
metalloid
metalloid
Carbon is a nonmetal.
metal
It is a metal.
metal