नाभिकीय विखंडन किसे कहते हैं
Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay.
वह प्रक्रिया जिसमे एक भारी नाभिक दो लगभग बराबर नाभिकों में टूट जाता हैं विखण्डन (fission) कहलाती हैं