A chemical compound is formed from chemical elements.
A chemical element is formed from atoms; atoms contain an atomic nucleus (protons and neutrons), electrons and...vacuum.
A pure element or a pure compound are homogeneous.
It is a compound. It represents a chemical reaction, which makes it a compound.
Hydrogen is the element that makes something acidic.
it is a chemical change so that is why it becomes a compound from a element
two or more different elements
Oxygen is an element. it is not a compound.
Chromium is an element. It is a d block metal element. It makes colourful cations.
The compound with the formula XY2 consists of one atom of element X and two atoms of element Y.
carbon is an element which is used as a standard
Potassium chlorate is a compound, which is a chemical made by putting together element bonds. So whilst potassium chlorate is a compound, what makes it contains element atoms.
If you meant "compound" the answer is "H2O" or "water." If you meant "element" the answer is "hydrogen."
This notation does not represent a valid chemical compound or element. It seems to be a combination of a subscript and numbers that do not align with standard chemical notation. Can you provide more context or clarify your question?