if you have 800 grams of a radioactive substance, 200gm grams of the radioactive substance will you have after two half-lives.
Compounds in the category of radioactive elements (also known as radioactive substances) have volatile nucleons. They stabilise itself by altering the nuclei (spontaneous fission, emission of alpha particles, or conversion of neutrons to protons or the reverse). Since radium is toxic, it must be extremely active. This material is a million times higher radioactive than uranium, giving it among the most radioactive organic component. Due to its high radioactivity, it produces a subtle blue glow. For instance, the Upper mantle naturally contains the radioactive elements uranium and thorium. These two components slowly modify their forms over thousands of years, leading to the production of decay products like radon and radium. Energy is released throughout this process. Alpha radiation is one type of this energy.
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