What is Co an element or compound?

Answer 1

The chemical symbol of an element contains one capital letter and sometimes one lowercase letter.

So in the case of Co, there is only one uppercase letter, therefore there is only one element. Co is the symbol for the metallic element cobalt.

In CO there are two uppercase letters, meaning there are two elements.

C is the symbol for carbon, O is the symbol for oxygen.

CO consists of molecules each containing 1 carbon atom and 1 oxygen atom, forming the toxic gas carbon monoxide.

Answer 2

Co is the element cobalt.

It is not to be confused with CO, which is the compound carbon monoxide.
Element. It is the symbol for the element cobalt

Answer 3

element