Solution : An oxidation reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between tow species an oxidaion reductin reaction is any chemical reaction in which the oxidation number of a molecule atom or ion changes by gaining or losing an electron
Answer:
I am sure that the C one is correct
O2 is an element As it contains just one kind of atom, O2 is an element,
Explanation:
The structure of Ferrarrisite Ca5(HAs O4)2(AsO4)2
