abundance of uranium in the earth crust; 2,5-3 ppm (mg/kg)
abundance of uranium in the sea water: ca. 3 ppb (?g/kg)
Polonium is a rare radioactive element on Earth. It is not found in nature in large quantities and is mostly produced as a byproduct of uranium and thorium decay. The abundance of polonium in the Earth's crust is estimated to be about 0.1 parts per trillion.
No Its a Actinolds, aka rare earth element
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.
Uranium is an element
No, Uranium is a rare-ish element whose radioactive isotope is often used in nuclear reactors. ingestion of radioactive elements can result in death
Neptunium has not minerals. It is an artificial element and in the nature is very rare, in some uranium ores.
Uranium is an actinoid series element.
Uranium exit in the environment, around us, in rocks and soils, in rivers and oceans, in vegetation, in building materials etc. and also in our bodies. Uranium is spread everywhere and is not so a rare element.
no. but uranium-239 is the most useful and it is very rare.
Yes, uranium is a natural but radioactive element.
Uranium is an element.
No. Uranium is an element.