Yes, americium is a metal. It might also be noted that it is radioactive; it has no stable isotopes.
Helium is a nonmetal. Think about the helium balloon!
Like all other metals except for mercury, americium is solid at room temperature.
Sodium chloride contains the metal sodium and the non metal chlorine.
Helium is a nonmetal. It has properties that classify it as a noble gas, which is a group of nonmetals that are generally unreactive.
SO2 is sulphur dioxide, at standard atmosphere it is a toxic gas with a pungent smell
Americium is a metal.
Americium is a metal.
Americium is a metal.
Nonmetal
Non metal - Argon is a noble gas
Nonmetal. Nitrogen is a gas.
Nonmetal. Nitrogen is a gas.
Helium is a nonmetal, a gas.
Nonmetal. Nitrogen is a gas.
Nonmetal. Nitrogen is a gas.
Neon is a gas, a nonmetal.
A metal and a nonmetal; but exceptions exist.