Question

which of the following is not an element?
(a) mg
(b) au
(c) CO2
(d) fe
please tell asap.​

Answer 1

Answer:

co2 is not element she is gas

Answer 2

Answer:

c) $CO_{2}$

Explanation:

$CO_{2}$  is not an element, it is a compound.

If this answer is helpful, please mark it as the brainliest:)