What color is radium 60 and what color is radium

The appearance of radium is: silvery-white.

Radium is located in group a of the seventh cycle. Silvery-white lustrous soft metal. First ionization energy, electronegativity.

Chemically active, unstable in the air, easy to combine with nitrogen and oxygen in the air. It reacts with water to form radium hydroxide (Ra(OH)2) and releases hydrogen. Soluble in dilute acids.

The chemical properties are very similar to barium. Alkaline earth metal sulfides such as zinc sulfide and calcium sulfide can emit light green soft phosphorescence under the irradiation of radium rays.

Radium rays can destroy animal bodies, kill cells and bacteria. Using the radioactivity of radium to make cancer, 10ppm of radium salt can be mixed with zinc sulfide and calcium sulfide to make luminescent coatings and luminescent plastics. A mixture of radium salt and beryllium powder can be used as a neutron radioactive source to detect the composition of petroleum resources and rocks.

Radium is a fluorescent-blue, silvery-white metal, and is the most reactive alkaline earth metal.

It is a chemical element.

The chemical symbol RA, atomic number 88, atomic weight, belongs to the periodic system A group, is a member of alkaline earth metals and a natural radioactive element.

Its English name** is derived from the Latin word radius, which means "ray".

The content of radium in the earth's crust is 1 10-9%, and among the isotopes with a mass of 206 230, except for radium-223, radium-224, radium-226 and radium-228, which are natural radioactive isotopes, the rest are synthesized by artificial methods. Radium is present in all uranium ores, with 1 gram of radium per tonne of uranium ore.

Radium is a fluorescent-blue, silvery-white metal, and is the most reactive alkaline earth metal.

Radium is a fluorescent-blue, silvery-white lustrous soft metal.

Radium is fluorescent-blue and silvery-white.

It's so expensive.

This kind of problem can generally be known very clearly in the encyclopedia, and the encyclopedia address of radium is.

There is detailed information.

Laser Blue isColorful blue.

Laser Blue Material: PET Color: Seven Colors, Phantom Color Model Specifications: 1 4 Laser Blue Shape: Hexagonal Packaging Specifications: 25kg Bag Origin Manufacturer: Guangzhou, GuangdongScope of Use: Christmas Ornament Balloon Filling.

Blue lasers are lasers with wavelengths between 360 and 480 nanometers (nm). Blue lasers are mainly gallium nitrides of the third group and are common semiconductor laser diodes. The new components are used in many applications, from high-density data storage to medical applications.

Evolution: Blue lasers typically operate at 400 nm, but with general operation, these devices display between 480 and 360 nm. There are also 473nm DPSS lasers on the market, but they are still very expensive.

The well-known 405nm laser is not actually blue, and it looks similar to violet to the eye, and the sensitivity of the human eye to color is very limited.

When pointing out a blue dot on a white object, it is actually fluorescent, the same effect as a black light lampFor applications on displays, true blue is light that requires a wavelength of 450 nanometers and 460 nanometers. This laser is already on the market.

The final big challenge was to construct a "true green" Ingan laser (around 530 nm). Many companies show devices that only work at wavelengths of 480-500 nanometers.

Pure radium metal is virtually colorless, but when exposed to air, it reacts with nitrogen to produce the black radium nitride (Ra3N2). All isotopes of radium are strongly radioactive, the most stable of which is radium-226, which has a half-life of about 1600 years and decays into radon-222.

When radium decays, ionizing radiation is produced, which makes fluorescent substances glow, which is a new element discovered by Marie Curie, and the discovery of radium has made a great contribution to science.

Density grams of cubic centimeters (20). The melting point is 700, and the boiling point is about 1140. Silvery-white lustrous soft metal. It is unstable in the air and is easy to combine with nitrogen and oxidation in the air.

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Metallic element, symbol ra (radium). Silvery-white, soft and radioactive. For malignant tumors, a mixture of radium salts and beryllium powder can be used as a neutron source.

Detailed explanation. First name

It is a strongly radioactive metal element of the alkaline earth group, which is present in very small quantities in bituminous uranium, potassium-vanadium-uranium and other uranium ores in a chemical state, and is an isotope with a mass of 226 - the element symbol Ra