Uranium was discovered in 1789 by the German chemist Martin Heinrich Klaproth working in Berlin.
Uranium was the first element to be known as being radioactive.
The first radioactive element to be discovered was uranium, though radioactivity was not discovered until some time later.
Natural Radioactive elements are firstly discovered by Madame Curie.
isolate radium
Marie and Pierre Curie
All isotopes of polonium (all 25 of them) are radioactive. Only traces of a single isotope exist in nature.
As radioactive element is an element that is on the Priodic Table of Elements. A Radioactive Element is usually radioactive.
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.
No, it is not radioactive.
It's a semantic thing - by definition, if something gives out radiation, then it is radioactive. If an element gives off radiation, then it is a 'radioactive' element. If it does not give out radiation, then it is not 'radioactive'.
Radioactivity is discovered on uranium.
First made in 1950 at the University of California. It is a radioactive metallic chemical element
The Curies discovered two radioactive elements: polonium and radium.
All isotopes of polonium (all 25 of them) are radioactive. Only traces of a single isotope exist in nature.
Polanium
Marie and Pierre Curie
he discovered the radioactive element Uranium......
The artificial radioactive element curium (Cm).
Marie Curie in 1898Radium was discovered by Marie Skłodowska-Curie and her husband Pierre in 1898.
Marie Skoldowska Curie
French scientist Henri Becquerel discovered radioactive elements.
Francium is radioactive, extremely rare, and was discovered in France (hence the name). It is pretty much useless because of its short half-life and rarity.