In a large collection of atoms, there is a definite time, called the half-life of the isotope, after which one-half of the total number of nuclei would have decayed. This time varies from few-millionths of a second to millions of years for different radioactive isotopes.adioactivity, also known as radioactive decay, is a process by which a radioactive isotope loses subatomic particles (helium nuclei or electrons) from its nucleus along with usual emission of gamma radiation, and becomes a different element.
This page uses Creative Commons Licensed content from Wikipedia (view authors). Fifth Harmony (also 5th Harmony or 5H and formerly LYLAS and later 1432) is an American girl group, between the ages of 18-22, consisting of members Dinah Jane Hansen, Ally Brooke, Camila Cabello, Normani Kordei and Lauren Jauregui.
Mindless Behavior Announces New Member. Mindless Behavior is shaking up its lineup. After rumblings that Prodigy had left the group last year, the boy band has announced a new member. EJ will join Princeton, Ray Ray, and Roc Royal as the fourth member of the R&B group, reports Just Jared. Jr.