unique ideas for elementary student awards do something new and creative this year by awarding your elementary students with unique student awards hopefully one or more of these awards made you think of a specific student
C. Fission: may create radioactive nuclei, may undergo a chain reaction Fusion: energy source for stars Fission and fusion: large amount of energy produced
Report Abuse. Because they're unstable. The nuclei of radioactive isotopes have more neutrons than protons (a stable element would have equal numbers of each) and thus emit neutrons as a way of balancing things out. This process is called decay.The time it takes for half a given amount to decay into a more stable form is called the half-life.eport Abuse. Because they're unstable. The nuclei of radioactive isotopes have more neutrons than protons (a stable element would have equal numbers of each) and thus emit neutrons as a way of balancing things out. This process is called decay.