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For information on each type of decay, read the page Decay pathways.In terms of entropy, radioactive decay can be defined as the tendency for matter and energy to gain inert uniformity or stability.Also, radioactive decay is an exponential decay function which means the larger the quantity of atoms, the more rapidly the element will decay.Mathematically speaking, the relationship between quantity and time for radioactive decay can be expressed in following way: \[\dfrac = - \lambda N \tag\] or more specifically \[\dfrac = - \lambda N \tag\] or via rearranging the separable differential equation \[\dfrac = - \lambda dt \tag\] by Integrating the equation \[\ln N(t) = - \lambda t C \tag\] with There are two ways to characterize the decay constant: mean-life and half-life. As indicated by the name, mean-life is the average of an element's lifetime and can be shown in terms of following expression \[ N_t=N_o e^ \tag \] \[1 = \int^_ 0 c \cdot N_0 e^ dt = c \cdot \dfrac \tag\] Rearranging the equation: \[ c= \dfrac\] Half-life is the time period that is characterized by the time it takes for half of the substance to decay (both radioactive and non-radioactive elements).

There are five types of radioactive decay: alpha emission, beta emission, positron emission, electron capture, and gamma emission.

The atomic nucleus which is in the center of the atom is buffered by surrounding electrons and external conditions.

Because of this, the study of decay is independent of the element's environment.

Radioactive decay is not always a one step phenomenon.

Often times the parent nuclei changes into a radioactive daughter nuclei which also decays.

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However, there exists a lighter isotope of Beryllium which contains 4 protons and only 3 neutrons, which gives a total mass of 7 amu.

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  1. It was a long wait — we are both in our mid-40s — but well worth it. I had never dated anyone with children, and I never wanted my own. She’d called when we were driving to the Mark Taper Forum in downtown Los Angeles, and we put her on speakerphone while I remained silent because she didn't yet know her dad was dating.