yes
No isotope of copper ordinarily found in nature is radioactive. Like all elements, synthetic radioactive isotopes of copper exist.
No.
because copper is a radioactive element and hazardous to animal
no it is not
yes
Thorium, plutonium and iron are radioactive (be sure, the natural isotope 54Fe is radioactive !).
Radon is a natural radioactive gas.
Yes, uranium is a natural but radioactive element.
Zirconium does have radioactive isotopes, but the main ones used in industry are not radioactive.
no... omg
Hydrogen has only one natural radioactive isotope(3H), of cosmogenic origin, but only in ultratraces on the earth. Sodium has two radioactive natural isotopes (22Na and 24Na), of cosmogenic origin, but only in ultratraces on the earth. Oxygen has not natural radioactive isotopes. All the isotopes of uranium are radioactive.
Yes, a natural isotope can be radioactive. Some natural isotopes have unstable nuclei and undergo radioactive decay to achieve a more stable form. This process involves the emission of radiation in the form of alpha particles, beta particles, or gamma rays.