All isotopes of francium are radioactive.
The element that fits this criteria is francium (Fr). All isotopes of francium are radioactive, with the most stable isotope having a half-life of only 22 minutes. Francium is a highly unstable element and is very rare in nature.
For example francium in the group 1.
Not all isotopes are radioactive; the radioactive isotopes are unstable and emit radiations.
All the uranium isotopes are radioactive.
All radioactive isotopes will disintegrate.
Yes, francium is radioactive. It is the most unstable and rarest naturally occurring element on Earth, with a half-life of only about 22 minutes. Due to its high radioactivity and short half-life, francium is extremely difficult to study and is typically only observed in trace amounts in nature.
Francium name by the Curies after france. Yes it is rare and radioactive.
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.
No, there are many stable isotopes.
No, Barium has both stable and radioactive isotopes. Out of its 25 known isotopes, only 6 of them are considered radioactive. The most stable isotope of Barium is Barium-138, which is not radioactive.
All the actinides isotopes are radioactive; and the majority are artificial isotopes.
All the isotopes of uranium are radioactive and unstable.