All the uranium isotopes are radioactive.
All the isotopes of plutonium are radioactive.
yes
All the isotopes of uranium and plutonium are radioactive; plutonium isotopes have a greater specific activity. For cerium: the isotopes 136Ce and 142Ce are possible to be radioactive but having very long half lives and a not significative radioactivity.
Yes. All the isotopes of plutonium are radioactive. It is dangerous stuff.
A radioactive element with several isotopes that always has 94 protons within its nucleus.
Not all isotopes are radioactive; the radioactive isotopes are unstable and emit radiations.
All radioactive isotopes will disintegrate.
All isotopes of francium are radioactive.
Plutonium is not related to uranium isotopes radioactive decay; plutonium is obtained by nuclear reactions from uranium isotopes only in nuclear reactors.
The nuclei of all plutonium isotopes contain the same number of protons.
Not all of the transition elements are radioactive. Many of them are, and some of them have common radioactive isotopes, but some of them have no naturally occurring radioactive isotopes. Please note that all elements have synthetic radioactive isotopes, at least.
From these isotopes decay products are obtained and also ionizing radiations.