Radium

Lithium, sodium, and potassium all float on water.

Sodium and lithium both react with the water to give off hydrogen gas - they look a bit like fizzies when they do it. They can give off enough heat to light the gas, so they burn as they float around if there is enough oxygen to support a flame. I imagine potassium would act the same way, but I have never seen it personally.

Beryllium, the lightest element in the alkaline earth group, is more dense that water, and would not float.

Radium was discovered by Pierre Curie, Marie Curie and Gustave Bemont in 1898.

The cost of radium can vary depending on the form and quantity being purchased. However, radium is a highly regulated radioactive element, and acquiring it can be expensive due to its rarity and the associated safety and security considerations. Additionally, the handling, transportation, and disposal of radium require specialized procedures and equipment, further contributing to its overall cost.

Senlac Hill was important because it was the location of the Battle of Hastings in 1066, where William the Conqueror's Norman army defeated King Harold II's English forces. This battle marked the Norman conquest of England and changed the course of English history. The victory established William as the new king of England and introduced Norman rule and culture to the country.

Studying residues of uranium ores Marie Curie and Pierre Curie found that these residues are more radioactive than uranium; they attributed this radioactivity to unknown elements. They isolated these elements and named these elements polonium and radium.

Marie Curie isolated pure radium on January 12, 1902.

Yes, radium is found in nature as a trace element in uranium ores. It is typically found in combination with other elements in these ores, and it is not typically found in its pure, uncombined form in nature.

The cost of radium can vary based on factors such as the purity, quantity, and source. Radium is a radioactive element with limited commercial uses due to its toxicity and health risks, so it is typically not openly traded on the market. It is often obtained through specialized suppliers or regulated channels for research or industrial purposes.

Today radium has only limited applications in research laboratories, for example for the preparation of radon standard solutions, in neutron sources of the type Ra-Be, etc.

Possible use in radiotherapy of some cancers.

Radium was used in the past for luminescent painting of watches and other instruments, was used in toothpaste, cosmetics, etc. These applications are not permitted now because radium is strongly radioactive and dangerous.

Marie Curie is famous for discovering the element Radium, previously unknown. The history of this is an interesting progression, like so much in science. The physicist Roentgen discovered X-rays, and found that they would pass through solid matter, and also that they would affect photographic plates. The scientist Becquerel discovered that a mineral called pitchblende would affect these plates even through their wrappers, and suspected that the mineral was producing X-rays. This was puzzling, because Roentgen made X-rays using high voltages in a vacuum chamber, while pitchblende just sat there but somehow did the trick. Curie thought that there must be something unknown in pitchblende. She bought tons of it, and started trying to isolate something else from it. Eventually she managed to get a few grams of something from the tons of original stuff. This new substance had remarkable properties. It was always warmer than its surroundings; it shone in the dark, and it produced something very like X-rays. The rate at which these three things were produced did not seem to diminish with time. She had produced a radioactive substance with a long half-life. Because it radiated light, heat and X-rays it became called Radium.

Radium therapy would typically be given for localized or early-stage cancers, where the intent is to target and treat the specific cancerous cells in a localized area. It is commonly used in early-stage prostate cancer, gynecological cancers, and certain skin cancers.

The atomic number of radium (Ra) is 88.

The atomic weight of Ra is 226 grams per mole.

See the Web Links to the left of this answer for a periodic table with more information about this element!

Port radium

Polonium and radium's affect on our lives today are for example the meters on our cars, they glow because of the radium and also some wristwatches the light you get when you press the button on the side. Radium was discovered by a woman named Marie Cuire, she's married, but she obviously died because of too much radium.

madame curie

Radium was discovered by Marie Curie, Pierre Curie and Gustave Bemont in 1898.

Polonium and was discovered in 1898 by Pierre Curie and Marie Curie.

Marie Curie also discovered polonium. Her husband Pierre helped in the investigation also. She started off by studying a variety of chemical compounds that contained uranium. She discovered that the strength of the rays that came out depended only on the amount of uranium in the compound. It had nothing to do with whether the material was solid or powdered, dry or wet, pure or combined with other chemical elements. If you had a certain amount of uranium a certain number of uranium atoms-then you got a certain intensity of radiation. Nothing else made a difference.

The Nobel Prize in Physics 1903 was divided, one half awarded to Antoine Henri Becquerel "in recognition of the extraordinary services he has rendered by his discovery of spontaneous radioactivity",the other half jointly to Pierre Curie and Marie Curie.

The short version is that, just as certain numbers of electrons give inert elements and certain other numbers give highly reactive elements, the stability of a nucleus is dependent on the number of neutrons and protons. Some isotopes of gold contain the proper numbers of nucleons to be stable; no isotopes of radium do, so radium is radioactive.

Today radium has only limited applications in research laboratories, for example for the preparation of radon standard solutions, in neutron sources of the type Ra-Be, etc.

Possible use in radiotherapy of some cancers.

Radium was used in the past for luminescent painting of watches and other instruments, was used rarely in toothpaste, cosmetics, etc. These applications are not permitted now because radium is strongly radioactive and dangerous.

:)

The short form electron configuration of radium is: [Rn]7s2.

Today radium has only limited applications in research laboratories, for example for the preparation of radon standard solutions, in neutron sources of the type Ra-Be, etc.

Possible use in radiotherapy of some cancers.

Radium was used in the past for luminescent painting of watches and other instruments, was used rarely in toothpaste, cosmetics, etc. These applications are not permitted now because radium is strongly radioactive and dangerous.

Rutherfordium is radioactive and a solid, liquid, and gas;)

Radium is a radioactive element that emits alpha, beta, and gamma rays. It is silvery-white in color and is highly radioactive due to its unstable atomic structure. Radium is chemically reactive, with properties similar to calcium.