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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.A proton from Beryllium-7 captures a single electron and becomes a neutron.This reaction produces a new isotope (Lithium-7) that has the same atomic mass unit as Beryllium-7 but one less proton which stabilizes the element.For elements, uniformity is produced by having an equal number of neutrons and protons which in turn dictates the desired nuclear forces to keep the nuclear particles inside the nucleus.However, any instance where one particle becomes more frequent than another creates a nucleus that becomes unstable.

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Even though radioactive decay is a first order reaction, where the rate of the reaction depends upon the concentration of one reactant (r = k [A][B] = k [A}) , it is not affected by factors that alter a typical chemical reactions.

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

This lighter isotope decays into Lithium-7 through electron capture.

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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