Mold in your home can cause symptoms such as. 1  Asthma. 2  Sore eyes. 3  Itchy skin.  Runny or blocked 1  nose. Sneezing. 2  Coughing. Sore throat.
Radioactive decay, also known as nuclear decay or radioactivity, is the process by which a nucleus of an unstable atom loses energy by emitting radiation.A material that spontaneously emits such radiation â which includes alpha particles, beta particles, gamma rays and conversion electrons â is considered radioactive.adioactive decay is a stochastic (i.e. random) process at the level of single atoms, in that, according to quantum theory, it is impossible to predict when a particular atom will decay.
The atoms of radioactive elements on the emission of alpha particles and beta particles would change into atoms of another element. This change is spontaneous and occurs due to instability of heavy nuclei. Such type of radioactive decay termed as natural radioactive decay and phenomenon called as natural radioactivity.he emission of an alpha particle results in the formation of an element which lie two place to the left in periodic table and the emission of beta particle results in the formation of an element which lies one place to the right. This is called as group displacement law. Natural radioactivity series.