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 emissions of the most common forms of spontaneous radioactive decay are the alpha (Î±) particle, the beta (Î²) particle, the gamma (Î³) ray, and the neutrino. The alpha particle is actually the nucleus of a helium-4 atom, with two positive charges 4 / 2 He. Such charged atoms are called ions.