There atoms of oxygen in the chemical formula 2ca(clo2)2.

Answer;

-8 atoms

Explanation;

There are eight atoms of oxygen in the chemical formula 2Ca(ClO2)2

-2 calcium atoms

-2 chlorine atoms

-4 oxygen atoms

Atoms are the smallest particles of an element that can take part in a chemical reaction.  compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds.

i would think it's food chain