Chemical formula foe chlorine monoxide is Cl2O. It is made of elements Cl and O. So it is a compound.
Chlorine is an element.
Carbon monoxide is a compound - CO.
Chlorine is a nonmetal but its is an element, not a compound.
A compound
'co' is neither a compound nor an element. Chemically it does NOT exist. 'CO' is the compound Carbon Monoxide ; a combination of carbon and oxygen. 'Co' is the element Cobalt ; found in the Periodic Table. NB Single letter elemental symbols are always written as a CAPITAL letter. Double letter elemental symbols are written as ; first letter is a CAPITAL letter and the second letter is small/lower case letter. There are NO elements/compounds with lower case letters throughout.. They DO NOT exist. This is the international standard, and recognised world-wide.
Chlorine is an element on the periodic table. If you look, its average atomic mass is 35.5 amus. It would be a compound if it was 'connected' with another element, ie Hydrogen. HCl is considered a compound, but chlorine (Cl) alone is just an element.
CI does not exist. Cl (with a lowercase L) is the element chlorine
Carbon monoxide is a compound.
It is a compound.
Carbon monoxide is a compound composed of the two elements carbon and oxygen.
compound =]
It's an element.