You need protein for your muscles, bones, and the rest of your body. Exactly how much you need changes with age: 1  Babies need about 10 grams a day. 2  School-age kids need 19-34 grams a day. 3  Teenage boys need up to 52 grams a day. 4  Teenage girls need 46 grams a day. 5  Adult men need about 56 grams a day.
All isotopes of radium are highly radioactive, with the most stable isotope being radium-226, which has a half-life of 1600 years and decays into radon gas.When radium decays, ionizing radiation is a product, which can excite fluorescent chemicals and cause radioluminescence.n nature, radium is found in uranium and (to a lesser extent) thorium ores in trace amounts as small as a seventh of a gram per ton of uraninite.
Scandium Uses. Scandium is a transition metal element, which was discovered in 1879. It has since found various applications in different fields. Find out more about its uses, and also some interesting facts about this metal, in this article.candium-46, which is a radioactive isotope of the element, is used in oil refineries, where it plays the role of a tracing agent. The compound scandium triflate acts as a catalyst in organic chemistry. Scandium can also be used for the purpose of polishing glass.