Which of the following is a compound? co2 ne o2 p4

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: neon , oxygen and phosphorous

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence