Answer:
A.Atoms are made of even smaller substances called subatomic particles
Explanation:
Atoms are made up of small subatomic particles such as protons, electrons and neutrons.
Protons and neutron are located in the center of the atom. Electrons orbit the center of the nucleus. Hence option A is incorrect.
Properties of an atom can be studied. The chemical property of an aton depends on its atomic number or the number of protons. Some atoms are inherently unstable and their radioactive properties are also studied. Hence option B is incorrect.
