Co2 would be a diatomic molecule of cobalt (Co), but since cobalt is a metal it does not form molecules and is simply Co.
CO2 is not an element but a compound of the two elements carbon and oxygen. It is carbon dioxide.
how did it get its name
3
Krypton is an element.
Mercury.
Elemet
Atoms are in any elemet
Elemet
Compound because it has more then one element in it.
It is when the molecule of a certain element only contains one atom of that elemet.
Oxygen is the most abundant element on earth. nitrogen
Assuming the request is for a sentence using the word "element" (since there is no English word "elemet"), here are two examples:Helium is the chemical element with atomic number 2.One big advantage to Drew's plan was that it had the element of surprise.
Atom number 20 is Calcium (period IV, group 2)