Nope. It's a metal (actinide).
Carbon is a nonmetal.
No, oxygen is not a metalloid. Oxygen is a nonmetal, located in group 16 of the periodic table.
Silicon is a metalloid. It shares properties of both metals and nonmetals.
Salt is a compound of Sodium (Na) and of Chlorine (Cl), thus, it is a nonmetal because it is a compound of 2 nonmetals. Na is not a nonmetal it is a highly active metal. This can be easily googled.
Helium is a nonmetal. It has properties that classify it as a noble gas, which is a group of nonmetals that are generally unreactive.
Uranium is a metal, rather than a nonmetal, or metalloid.
Nails are metal.
metalloid
metalloid
metalloid
metalloid
nonmetal
Silicon is a metalloid.
Carbon is a nonmetal.
metal
It is a metal.
metal