What element exists as X4 molecules?

Question

What element exists as X4 molecules?

Answer 1

well it depends if you are talking about natural allotropes....and if you want stable allotropes only....

....if you are not bothered about natural/manmade and stability you could argue oxygen or sulfer....

but heres a basic list:

tetraoxygen, O4 - metastable

White phosphorus - crystalline solid P4

tetranitrogen N4

Yellow arsenic - molecular non-metallic As4

I'm assuming that you are at high school or college level so i would just simplify it down to Phosphorus (P)