uranium ores
No radioactive isotopes of neon are ordinarily found in nature. All elements have radioactive synthetic isotopes, however.
All erbium ordinarily found in nature is of stable isotopes. Like all other elements, erbium has synthetic radioactive isotopes.
Nearly all, 99.988%, of tantalum found in nature is stable. The natural radioactive isotope, 180mTa, accounts for 0.012% of it, and is believed to have a very long half life of about 1,200,000,000,000,000 years. Like all elements, tantalum has synthetic 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.
There are different isotopes of strontium. While some isotopes of strontium are stable and non-radioactive (e.g., strontium-88), other isotopes are radioactive (e.g., strontium-90). Strontium-90 is considered a hazardous radioactive isotope because it can be absorbed by the body and increase the risk of cancer.
No radioactive isotopes of neon are ordinarily found in nature. All elements have radioactive synthetic isotopes, however.
All erbium ordinarily found in nature is of stable isotopes. Like all other elements, erbium has synthetic radioactive isotopes.
None of the isotopes of xenon ordinarily found in nature is radioactive. Like all elements, xenon has synthetic radioactive isotopes.
The atoms that are radioactive are those with unstable nuclei. There is no easy way to tell which is which, so the isotope has to be looked up. All elements have at least some radioactive isotopes. There are 36 elements for which all radioactive isotopes are synthetic or fission products, so for practical purposes, there are no radioactive isotopes of them in nature, except where introduced by human activity. They include most of the common elements we find in nature, but not all. There are 44 elements that are found as stable isotopes, but at least traces of radioactive isotopes are found in nature. Among these are hydrogen, carbon, sodium, silicon, chlorine, and potassium, all of which are necessary for life. Radioactive potassium, in particular, is present as 0.012% of all potassium. For another group of elements, including technetium, promethium, and all with atomic numbers of 83 (bismuth) or more, there is no isotope that is stable.
Nearly all, 99.988%, of tantalum found in nature is stable. The natural radioactive isotope, 180mTa, accounts for 0.012% of it, and is believed to have a very long half life of about 1,200,000,000,000,000 years. Like all elements, tantalum has synthetic radioactive isotopes.
No isotope of silver ordinarily found in nature is radioactive. Like all elements, silver has synthetic radioactive isotopes.Silver is not radio active, none of silver's isotopes have radio activity.ur welcome!
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.
There are different isotopes of strontium. While some isotopes of strontium are stable and non-radioactive (e.g., strontium-88), other isotopes are radioactive (e.g., strontium-90). Strontium-90 is considered a hazardous radioactive isotope because it can be absorbed by the body and increase the risk of cancer.
Neodymium is radioactive, though for most practical purposes it can be regarded as stable. 30.4% of neodymium is of two radioactive isotopes, but their half lives are very long, the shorter being 2,290,000,000,000,000 years. Like all other elements, neodymium has synthetic radioactive isotopes.
There are no radioactive isotopes of boron that are ordinarily found in nature. All elements have synthetic radioactive isotopes, however.
Holmium actually has the highest magnetic strength out of all known elements given it is first submersed in an artificially produced magnetic field.
No not all isotopes are radioactive, However there certainly are several elements which have no stable isotopes.these are the man made elements also known as "Not found in nature". such as:Tc - Technetium (43)Pm - Promethium (61)Np - Neptunium (93)Pu - Plutonium (94)Am - Americum (95)Cm - Curium (96)Bk - Berkelium (97)Cf - Californium (98)Es - Einsteinium (99)Fm - Fermium (100)No.No, not all isotopes are radioactive. Only atoms that are unstable (carbon-14, etc.) are radioactive