If you mean O2, then it is a molecule, though it would be more appropriate to call it "double oxygen" than "double oxide." Though it is usually just called oxygen.
If you main O22-, then it is an ion, not a molecule or atom. It is called the peroxide ion.
Ferric oxide is a compound made up of iron and oxygen atoms. It is not an atom or a molecule on its own, but rather a combination of atoms.
Since iron oxide is made from TWO elements (Fe, and O), it is a compounds and so you have a MOLECULE, not an atom of iron oxide.
One molecule of iron oxide consists of one iron atom and one oxygen atom. Therefore, the total number of atoms in one molecule of iron oxide is two.
You think probable to nitrogen: nitric oxide, NO.
Carbon(IV)oxide or more commonly named carbon dioxide (CO2) is a linear molecule of one central carbon atom with two double bonded oxygen atoms.O = C = O
yes
Sodium oxide is made up of three atoms: two sodium atoms and one oxygen atom.
First of all you can have either carbon monoxide or carbon dioxide, and maybe a couple of others, but not just carbon oxide. Secondly an atom is of only 1 element and this compound contains 2 types of element (carbon and oxygen), which makes it a molecule.
Copper oxide is a compound made up of copper and oxygen atoms. It is not considered a single atom itself, but rather a combination of atoms bonded together.
K2O: 3 atoms in the molecule K2O2: 4 atoms in the molecule KO2: 3 atoms in the molecule
Magnesium oxide is represented as MgO, not 2Mg O2. Mg represents one magnesium atom, and O represents one oxygen atom. When these two elements react, they form one molecule of magnesium oxide, which is composed of one magnesium atom and one oxygen atom.
Calcium oxide has 20 electrons from the calcium atom, and 8 electrons from the oxygen atom, totaling 28 electrons.