Is radon a metal nonmetal or metalloid?
The use of radium in medicine became so common that every kind of disease was treated by radium therapy: not only breast cancer, but also, diabetes, sciatica, uraemia, rheumatism, and even impotence!
Is radium a pure metal?
Radium is silvery, lustrous, soft, intensely radioactive. It readily oxidizes on exposure to air, turning from almost pure white to black. Radium is luminescent, corrodes in water to form radium hydroxide. Although is the heaviest member of the alkaline-earth group it is the most volatile.
The chemical behaviour of radon is similar to that of a metal fluoride and is consistent with its position in the periodic table as a metalloid element.
