Radium was discovered by Marie Curie, Pierre Curie and Gustave Bemont in 1898.
The question is nonsense. What constitutes a "discovery"? Is turning over a rock and finding a worm a "discovery"? If you could be more specific ("how many elements did Marie Curie discover?"), then it might be possible to give a sensible answer (two, polonium and radium; on a related topic, she didn't discover thorium, but she was one of the first people to notice that it was radioactive).
Radium and polonium have many applications but they are not so important to affect us today.
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Her discovery of radium changed the way people look and try to treat cancer. Radium is used in x-rays and polonium is used in many drugs, like tobacco. Marie Curie has contributed all these things to the society.
mostly likely millions or thousands.
Do not know
Marie Curie's discovery of the elements radium and polonium led to the development of radiation therapy for cancer treatment. Her research laid the groundwork for the use of radiation to target and kill cancer cells, ultimately saving many lives through improved cancer treatment options.
Radium has 88 protons.
Radium has 88 protons.
Radium has seven electron shells; the valence of radium is 2+.
There are 88 protons in a radium atom.
The question is nonsense. What constitutes a "discovery"? Is turning over a rock and finding a worm a "discovery"? If you could be more specific ("how many elements did Marie Curie discover?"), then it might be possible to give a sensible answer (two, polonium and radium; on a related topic, she didn't discover thorium, but she was one of the first people to notice that it was radioactive).
Radium has 86 electrons.
Radium has one valence electron.
Radium has two valence electrons.
The Radium Pool has 188 pages.
Radium typically has 138 neutrons.