Competency #7
Answer and Explanation
Co is the symbol for the element ‘cobalt,' which is a transition metal with atomic number, 27. The elements, found on the periodic table, are the building blocks of all matter. Cobalt is just one of the approximately 100 elements found in nature.
CO is the formula for a molecular compound that contains 1 carbon atom and 1 oxygen atom. CO is a combination of 2 elements.
© 2008 Anne Arundel Community College