Nonmetal
Invisible gas does not fit into the categories of metal or nonmetal. It is a state of matter that refers to gases that are not visible to the naked eye. Many elements in the periodic table can exist in the form of invisible gases, such as hydrogen, oxygen, nitrogen, and carbon dioxide.
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.
Metal, I believe.
it's a non-metal
Nonmetal. Helium is a noble gas.