Respuesta :

Answer:Hydrogen (sometimes)

Carbon

Nitrogen

Oxygen

Phosphorus

Sulfur

Selenium

Fluorine

Chlorine

Bromine

Iodine

Astatine

Tennessine (sometimes considered a halogen or metalloid)

Helium

Neon

Argon

Krypton

Xenon

Radon

Oganesson (possibly behaves as a "noble gas", except it won't be a gas under ordinary conditions)

Explanation: