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.
History. Radium was discovered in 1898 by Madame Curie in the pitchblende or uraninite of North Bohemia, where it occurs.There is about 1 g of radium in 7 tons of pitchblende. The element was isolated in 1911 by Mme.istory. Radium was discovered in 1898 by Madame Curie in the pitchblende or uraninite of North Bohemia, where it occurs.