Radium

The first use of radium was in the preparation of luminescent paints for the instrument dials.

Radium decays in any of (at least) four different ways, depending on isotope and, in some cases, on luck, as some isotopes can decay in different ways.

The most important way radium can decay is by alpha emission. Nearly all naturally occurring radium decays this way, and so do the majority of synthetic isotopes. In this case, radium emits an alpha particle, which can be regarded as a helium nucleus, and the daughter atom is radon. The isotope of radon is depends on the isotope of radium involved; the mass number of the radon is always equal to the mass number of the radium minus four.

Some heavier radium isotopes undergo negative beta decay, in which case the decay products are an actinium atom and a negative beta particle, which can be viewed as an electron.

Some lighter radium isotopes undergo positive beta decay, in which case the decay products are a francium atom, a positive beta particle, which can be viewed as a positron, and an electron type antineutrino.

A few radium isotopes also rarely undergo what is called cluster decay, and the most important naturally occurring isotope, radium-226 is among these. Cluster decay involves emission of a nucleus larger than an alpha particle, and in the case of radium all known cluster decays emit carbon-14 nuclei. In this case, the daughter atom is lead, with a mass number that is 14 lower than the mass number of the parent. So radium-226 can emit a carbon-14 nucleus, leaving a lead-212 atom.

Radon has 86 protons, 86 electrons.Rn-222 isotope has 136 (222 - 86 = 136) neutrons

Yes. Radium is a highly radioactive alkali earth metal, and inhalation, injection, ingestion or body exposure to radium can cause chemical burns, radiation burns and can lead to cancer and other disorders. Radium is chemically similar to calcium, and it has the ability to replace calcuim in bones, which is extremely harmful. A link is provided to the Wikipedia article on radium.

There are three types of radioactive decay, alpha, beta and gamma. Alpha decay is when an unstable, or radioactive, nucleus gives off an alpha particle, which consists of two protons and two neutrons. Beta decay is when a nucleus gives of a positron or an electron, called a beta particle, and gamma decay is when a nucleus gives off a gamma ray. A gamma ray is a highly energetic photon of light.

1. "Illuminate your world with Radium!"
2. "Shine bright like Radium!"
3. "Glowing brilliance with Radium."
4. "Radiant energy, powered by Radium."

Rubidium has 5 electron shells.

The electron configuration of rubidium is [Kr]5s1.

calcium will bond with the other elements in the alkaline earth metal family. that would include magnesium, barium. radium, strontium, and beryllium. it may also bond with other elements like chlorine and sodium, but I'm not sure on that one.

Um good try but im a science teacher with many colledge graduate degrees and actually nothing bons with Calcium

>>I'm rather sure that a science teacher could spell "college" and "bonds" correctly, especially if they have multiple college degrees. Since calcium is an alkaline earth metal, it is very reactive and will bond with just about anything. Some of these things are halogens (the 17th column of the periodic table) and most of the nonmetals. You won't find calcium in its pure form in nature; it's always bonded with something else.

Polonium was discovered by Marie Curie and Pierre Curie in 1898.
Radium was discovered by Marie Curie, Pierre Curie and G. Bemont also in 1898.

Radium is a decay product of uranium and is therefore found in all uranium-bearing ores. (One metric ton of pitchblende yields 0.0001 grams of radium). Radium was originally acquired from pitchblende ore from Joachimsthal, Bohemia, in the Czech Republic. Carnotite sands in Colorado provide some of the element, but richer ores are found in the Democratic Republic of the Congo and the Great Lakes area of Canada, and can also be extracted from uranium processing waste. Large radium-containing uranium deposits are located in Canada (Ontario), the United States (New Mexico, Utah, and Virginia), Australia, and in other places.

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

Radium is a member of the group 2 (alkaline earth metals) of the periodic table of Mendeleev; the other members are beryllium, calcium, magnesium, strontium, barium.

Radium is also a radioactive element.

The name radium comes from a Latin word radius, which means ray. It was named this because the chemists found that photographic effects were similar at light rays.

Yes.

The thermal conductivity of radium is 18,6 W/m.K at 27 0C.

The electrical resistivity of radium is 1 μΩ.m at 20 0C.

No. X-rays can be generated by radium, but they are not used for any major purpose, and especially not for radiography. The X-rays used are produced by interactions of high-energy electrons; radium is not used because it generates other, non-useful types of radiation, some of which are dangerous to health - making strong enough X-rays would result in toxic amounts of radiation being absorbed by the patient.

Radium is not more powerful than uranium. Both radium and uranium are radioactive elements with different properties and uses. Radium is a decay product of uranium and is less commonly found in nature.

Radium is nearly pure white. When it is exposed to air, though, it immediately oxidizes, turning black. The heaviest of the alkaline earth metals, radium is a chemical element whose atoms - like those of the other alkaline earth metals - have two electrons in their outermost shell; this causes them to react readily and form numerous compounds. The luminescent quality in radium made it ideal for use in self-luminous paints for watches, instrument dials, clocks and the like. Unaware of the danger of the extreme radioactivity of the element, many watch-dial painters who shaped their paintbrushes by putting them between their lips, died from the extended exposure to the radium in the paint. With its hazards come benefits. Today, radium is used medically to treat some kinds of cancer. On this date in 1898, scientists Pierre and Marie Curie and Gustave Bemont discovered radium in pitchblende that came from the now Czech Republic.
Radium has probably a silvery metallic appearance.

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.

Now radium hasn't any use at home and in the industry.

radium was not invented, it was discovered.

Two electrons in the outer shell of radium.

Polonium was discovered by Marie Curie and Pierre Curie in 1898.
Radium was discovered by Marie Curie, Pierre Curie and G. Bemont also in 1898.
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.

I don't know about radon, but xenon gas, also a noble gas, is an anion when it makes compounds, as rarely as it does.