All nuclear decay is spontaneous.
Matter can be made to undergo nuclear decay in reactors, but it is a process that occurs spontaneously in nature.
Natural chromium is stable and does not decay/
Energy and electrical charge are two quantities that are always conserved in nuclear decay equation.
There are a number of radioactive isotopes of copper, choosing 66Cu as on that undergoes negative beta decay, the equation is: 2966Cu --> 3066Zn + -10e Where e represents the beta particle, which can also be viewed as an electron.
The decay equation is:Co-60----------------------Ni-60 + e-
The equation for the beta decay of 3H is: 13H --> 23He + -10e where -10e represents a negative beta particle or electron.
The equation for the beta decay of 86Rb:3786Rb --> 3886Sr+ -10e where the -10e represents a beta particle or electron.
The equation for the beta decay of 32Si is: 1432Si --> 1532P + -10e where -10e represents a negative beta particle or electron.
Nobelium-260, formally 102260No, does not decay by beta decay. It decays by spontaneous fission with a half life of 106 milliseconds. For further information, please see the Related Link below.
The equation for the alpha decay of 235U is: 92235U --> 90231Th + 24He representing the alpha particle as a helium nucleus. 235U also decays by spontaneous fission, but the results are somewhat unpredictable, so there is no standard equation.
Matter can be made to undergo nuclear decay in reactors, but it is a process that occurs spontaneously in nature.
There are three beta decay modes for 40K, and so three equations. The equation for the negative beta decay of 40K: 1940K --> 2040Ca + -10e where the -10e represents a beta particle or electron. The equation for the positive beta decay of 40K: 1940K --> 1840Ar+ 10e where the 10e represents a positive beta particle or positron. The equation for the decay of 40K by electron capture is:1940K + -10e --> 1840Ar + ve
59Fe --> 59Co + e- 59Co, stable
The nuclear decay equation for the decay of selenium-75 (75Se) by beta decay is: ( ^{75}{34}Se \rightarrow ^{75}{35}Br + e^- + \overline{\nu_e} ) This equation represents the transformation of a selenium-75 nucleus into a bromine-75 nucleus, an electron, and an electron antineutrino.
The nuclear decay equation for Po-208 is: Po-208 → Pb-204 + He-4
There are three beta decay modes for 40K, and so three equations. The equation for the negative beta decay of 40K: 1940K --> 2040Ca + -10e where the -10e represents a beta particle or electron. The equation for the positive beta decay of 40K: 1940K --> 1840Ar+ 10e where the 10e represents a positive beta particle or positron. The equation for the decay of 40K by electron capture is:1940K + -10e --> 1840Ar + ve
Natural chromium is stable and does not decay/