Question

which of the following is a compound? \\(\ce{co2}\\) \\(\ce{c}\\) \\(\ce{o2}\\) \\(\ce{co}\\)

Explanation:

A compound is a substance made of two or more different elements chemically bonded together. $\text{CO}_2$ consists of carbon (C) and oxygen (O), two distinct elements, so it is a compound. $\text{C}$ is a single element, $\text{O}_2$ is a molecule of one element, and $\text{Co}$ is the element cobalt.

Answer:

$\text{CO}_2$