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What element is memeber of this group all isotopes of this element are radioactive?
There is no group specified so it is not possible to be sure about this answer but all isotopes of promethium are radioactive.
What element has all of their isotopes radioactive?
An example is uranium.
Is Pm a radioactive substance?
Pm is Prometheum. All isotopes of this element are radioactive.
Does uranium exist in a stable non-radioactive form?
All the isotopes of uranium are radioactive and unstable.
Is astatine an example of radioactive element?
Yes. There are no stable isotopes of astatine, they are all radioactive.
What or who disproved all atoms of a given element are the same?
Frederick Soddy in 1912 observed first radioactive isotopes and J.J. Thomson first stable isotopes in1913.
Is nobelium a stable element?
All the isotopes of nobelium are radioactive and unstable.
Does Barium have isotopes that are all radioactive?
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.
What element that has no stable isotopes?
Technetium (Tc) is the element that has no stable isotopes. All of its isotopes are radioactive with half-lives ranging from minutes to millions of years.
Which lanthanide element and which transition element have only radioactive isotopes?
All or almost all elements have radioactive isotopes if artificial isotopes are included. Among the naturally occurring elements, uranium, polonium, radium, and thorium have naturally occurring radioactive isotopes on earth.
All the isotopes of this element are radioactive?
Promethium, Technetium, and any element heavier than Bismuth.
Find one element on the chart that has no stable isotopes?
Technetium, Promethium, and all elements heavier then Bismuth.
