In a nuclear reactor, moderators slow down the neutrons which come out in a fission process. The moderator used have light nuclei. Heavy nuclei will not serve the purpose because

In a nuclear reactor, moderators slow down the neutrons which come out

1.	In a nuclear reactor, moderators slow down the neutrons which come out in a fission process. The moderator used have light nuclei. Heavy nuclei will not serve the purpose because
Answer» they will break up elastic collision of neutrons with heavy nuclei will not slow them down the net weight of the REACTOR would be unbearably high substances with heavy nuclei do not occur in liquid or gaseous state at room temperature . SOLUTION :During an elastic collision between two particles, the MAXIMUM kinetic energy is transferred from one particle to the otherwhen they have the same mass. Therefore ,heavy nuclei will not serve the PURPOSE because elastic collisionof neutrons with heavy nuclei will not show them down.

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In a nuclear reactor, moderators slow down the neutrons which come out in a fission process. The moderator used have light nuclei. Heavy nuclei will not serve the purpose because

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