Question

Why is so much energy required and released in a nuclear reaction?

Answer 1

Hey mate,
A nuclear fission reaction relies on fast moving neutrons which split up heavy nuclei. One neutron can split a heavy nucleus like Uranium and form two more energetic neutrons. ... After a short time, a huge number of nuclei would be split, therefore a lot of energy is released in the process.

Answer 2

in a nuclear reaction relies on fast moving which split up heavy nuclei. one nutron can split away heavy nuclear like uranium and form two more energetic nucler after a short time a huge number of nucli is split away therefore lots of energy is relased for nucler fission reaction. on the nucler fussion reaction having between light and heavier elements like H2
interating nucli belong the elements with low atomic nuclei then substantial amounts of energy is released.
hope you help this.