Nitrogen(N), Oxygen(o), chlorine(Cl),neon(Ne),and argon(Ar) are all elements that occur as a gas at room temperature(20 degree celsuis). using the periodic table, which pair of gases has the most similar properties?

Nitrogen and Oxygen
Oxygen and Nitrogen
Neon and Argon
Chlorine and neon

All the help will be appreciated! =) Many thanks!

Question

Nitrogen(N), Oxygen(o), chlorine(Cl),neon(Ne),and argon(Ar) are all elements that occur as a gas at room temperature(20 degree celsuis). using the periodic table, which pair of gases has the most similar properties?

Nitrogen and Oxygen
Oxygen and Nitrogen
Neon and Argon
Chlorine and neon

All the help will be appreciated! =) Many thanks!

aaronq · Answer

get out your periodic table, similar properties refers to valence e (amongst other things), so see which ones fall under the same Column (or Group)