Uranium is around us: in rocks and minerals (more than 200 minerals contain uranium), in soils in all waters including the tap water, in the atmosphere, building materials, vegetation etc. Uranium is not a so rare chemical element.
Plutonium is an element that does not occur in nature in significant amounts but can be produced artificially in nuclear reactors.
Uranium is a natural chemical element, a metal and is radioactive.
Uranium is a natural chemical element, metal, radioactive.
An element occur in nature as a pure element or as a compound.
Uranium is a metallic element and is not classified as an acid or a base. It is a radioactive element that can be found in nature as uranium-238 and uranium-235 isotopes.
Polonium is a very rare chemical element accompanying uranium in ores (probably in the form of an oxide).
Bromine is a liquid but doesn't occur in nature as a free element.
Yes
I believe it is Uranium. All elements heavier than uranium are man-made. Here's an interesting article... http://space.newscientist.com/article/dn13828-has-the-heaviest-element-been-found.html
Plutonium is a synthetic element that is radioactive. It does not occur naturally in nature and must be artificially produced through the nuclear fission of uranium.
no. uranium and thorium occur in nature
No, Uranium is naturally occurring. But all elements beyond uranium are man-made.