What is the chemical composition of radium?

Answer 1

On the average, throughout the world, one part of radon is present to 1 x 1021 part of air. At room temperatures radon is a colorless/odorless gas but when radon is cooled below the freezing point, radon exhibits a brilliant luminescence which turns yellow as the temperature decreases and orange-redish at the equivalent temperature of liquid air. Radon is an inert gas therefore it is a noble gas but research has shown that radon does react with fluorine, forming a fluoride. Radon is also the heaviest known gas and although radon is usually found in rock beds it has been found in some water springs.

• Radon does not react with air
• Radon does not react with water although it does dissolve slightly to the extent of about 230 cm3 kg-1 at 20°C (293 K)
• Radon gas doesn't react with any halogens except fluorine. Radon gas reacts with fluorine to form the difluoride radon(II) fluoride, RnF2, but the compound cannot be characterized.
• Radon does not react with any acids or bases
• 7 isotopes
• atomic number 86

Answer 2

Radium is a radioactive element with the symbol Ra and atomic number 88. It is an alkaline earth metal and its most common isotope, radium-226, has a half-life of about 1600 years. Radium decays into radon gas through alpha decay.

Answer 3

Radium (Ra) is a chemical element, not a compound.