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  1. D. Neutron
    The collision of neutrons is what causes the fission reaction to occur.

  2. d.) neutron is the right answer

    cauze neutron is bombarded on nucleus of uranium atom to break it, in the nuclear reactor.
    neutron is chosen for this work cauze it has mass and no charge so it can break the nucleus easily !!

  3. d. neutron. The neutron has no charge and is not repelled (like a proton or alpha particle) when directed toward a positively charge nucleus. Once it enters a heavy nucleus (uranium, etc.) it causes an instability that permits the atom to split radioactively with a very short (useful) half life. Natural decay neutrons are available in the core or may be augmented by an artificial source. However, after the fission process begins enough excess neutrons are produced to sustain a chain reaction that must be controlled using control rods that absorb excessive neutrons.

Which atomic particle is used to cause fission in an atomic reactor?

a. alpha particle
b. beta paticle
c. deuteron
d. neutron