Answer:
CO2
Explanation:
Carbon dioxide is made by the combination of carbon and dioxide.
For the formation of carbon dioxide the reaction that takes place is as follows:
C + O2 ------> CO2
Here the valency of carbon is 4 and that of oxygen is 2.
A double bond is formed between an atom of carbon and two atoms of oxygen as shown in the image and this results in the formation of carbon dioxide, CO2.
