Which of these chemical formulasNaCl, O2, He, or SO2represents both an element and a molecule?
(Points : 5)
NaCl

O2

He

SO2

Question

Which of these chemical formulasNaCl, O2, He, or SO2represents both an element and a molecule?
 (Points : 5)  
       NaCl

        O2

        He

        SO2

m.d.saxon · Answer

idk sorry

anonymous · Answer

Helium and Sodium Chloride

perl · Answer

oxygen is an element, but it occurs naturally as a diatomic molecule

aaronq · Answer

i dont think this question makes sense, as a molecule needs to be at least 2 atoms. 

If it's more than 2 atoms, then it cannot be an element.

aaronq · Answer

^i agree, if you have to choose one, then choose $O_2$

anonymous · Answer

I am very confused...

perl · Answer

oxygen occurs in nature not as single atoms, but as two bonded oxygen atoms (its a molecule). but oxygen is still an element

anonymous · Answer

Okay, thank you :)