Question

Which of the following is a compound? CO2 Ne O2 P4

Answer 1

I think Co2 is a compound

Answer 2

Answer:
`CO_2`

Step-by-step 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
`Ne`, oxygen
`O_2` and phosphorous
`P_4`

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
`CO_2`

`CO_2\rightarrow C+O_2`