All isotopes of all elements past bismuth are radioactive (and it is believed that even for bismuth all isotopes are radioactive, its most stable isotope just appears to have a halflife several orders of magnitude longer than the age of the universe).
We're not actually 100% certain that there are any elements that are absolutely not radioactive. Some Grand Unified Theories predict that protons are unstable over incredibly long timescales, and if so, no baryonic matter (all elements are baryonic matter) is stable over the very very long term.
The element with the highest atomic number having at least one isotope that is believed to be stable (provided that proton decay does not occur) is lead. 206Pb, 207Pb, and 208Pb are all stable both theoretically and according to the best measurements we can make. The most stable isotope of bismuth is 209Bi, which has an extremely long half-life: about 20,000,000,000,000,000,000 (2x1019) years. This is about 15,000,000,000 times longer than the current estimated age of the universe, and it's likely that no one would have noticed that bismuth-209 was radioactive if it hadn't been studied very closely because theoretical models predicted that it should be unstable. For all real-world applications, bismuth can be regarded as stable and non-radioactive.
This is still much, much shorter than the lowest possible bound on the (hypothetical) proton decay half-life, which recent experiments have indicated cannot be less than about 10,000,000,000,000,000,000,000,000,000,000,000 (1034) years.
Lead is the last element on the Periodic Table that isn't radioactive. It is also the heaviest of the non-radioactive elements.
i have no clue
uranium and titanium
ununocctiium
Bismuth
bismuth
Astatine
The radioactive element is composed of unstable nuclei that try to reach stability through emitting nuclear radiations as alpha, beta, and gamma nuclear radiations.
The heaviest element that is highly radioactive is Ununoctium, which has an atomic number of 118.
false
Bromine (Br) is a liquid Iodine (I) is a solid
A disintegration series is the pathway of a radioactively unstable element into a stable element. The pathway alters the atomic number of the element and converts the element into another element. A common one is the uranium disintegration series.
non radioactive element
no
All the three elements are generally non-radioactive.
yes
The element Bismuth (Bi) belongs to the Nitrogen family (Group 15). This means it has similar characteristics to other elements in this family. Bismuth is atomic number 83 and the last non-radioactive element.
All the decay chain isotopes are radioactive and toxic (excepting the last member which is non-radioactive but also toxic); you think probably to radium or polonium.
If you had a stable element 115, then by definition there would need to be at least one non-radioactive isotope. Stable elements are those that have at least one nonradioactive isotope. Of course, the other isotopes of the element could all be radioactive.
As radioactive element is an element that is on the Priodic Table of Elements. A Radioactive Element is usually radioactive.
FRANCIUM
Carbon is non-radioactive excepting the isotope carbon-14.
Yes. Any element which is radioactive may bond together with other molecules and atoms, just as much as any other non-radioactive element. However, radioactive elements would have a slightly greater pull towards their bonded species if their nucleus has more neutrons than what is normal for non-radioactive elements.
A radioactive element is one that discharges radiation. Uranium is a radioactive element. A radioactive element is very dangerous if you don't have protective clothing. You should never go near a radioactive element.