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Which describes nuclear fissiom

Stars when a neutron slams into an atom,causing the larger atom to split into two

Starts when two atoms slam together,causing the larger atom to split into two smaller atoms

Starts when two atoms slam together to form one,heavier atom

Starts when a neutron slams into an atom,causing two atoms to form one,heavier atom

1 answer

The correct description of nuclear fission is:

"Starts when a neutron slams into an atom, causing the larger atom to split into two."

In nuclear fission, a neutron collides with a heavy nucleus (such as uranium-235 or plutonium-239), causing it to become unstable and split into two smaller nuclei, along with the release of energy and additional neutrons.