Carbon - 14 is the naturally produced right from Nitrogen being bombarded by cosmic rays in the upper atomosphere.
Same way Uranium 235, polonium, radium etc are also available naturally.
Several dozen radioactive elents at the Link.
Technetium is a radioactive metallic element with no known taste or flavor. It is not naturally occurring on Earth and is primarily produced in nuclear reactors.
NO!!! Because if it was, there would not be any silver jewellery/cutlery etc., about, because the radio-activity woulkd be dangerous.
Normal phase berkelium is solid. It is a radioactive metallic element that is part of the actinide series. Berkelium does not occur naturally on Earth and is primarily produced in nuclear reactors.
No, copper is a metallic element and is not alive. It is a naturally occurring element found in the Earth's crust.
Polonium is a radioactive chemical element with the symbol Po and atomic number 84. It is a rare and highly toxic metalloid that was discovered by Marie Curie in 1898. Polonium has a variety of applications, including in nuclear reactors and in industry.
francium, an alkali metal
No. It is not radioactive.
Technetium is a radioactive metallic element with no known taste or flavor. It is not naturally occurring on Earth and is primarily produced in nuclear reactors.
Tin is a naturally occurring metallic element. It is only created in supernova explosions. Radioactive tin can be created in nuclear reactors.
Uranium and Plutonium
Thorium is an inner transition element, which means it is a metal.
It is radon that we see formed from the decay of naturally radioactive substances in the earth's crust.
First made in 1950 at the University of California. It is a radioactive metallic chemical element
NO!!! Because if it was, there would not be any silver jewellery/cutlery etc., about, because the radio-activity woulkd be dangerous.
Radium and polonium
Uranium is a natural chemical element, radioactive, dense, atomic number 92.Uranium is a solid metal.
It is radioactive decay.