A nuclear chain reaction occurs
A)when an atoms splits.
B)when neutrons released from a splitting atom colliding with the nucleus of another atom,causing it to split.
C)when a rapidly moving neutron collides with an electron causing it to split into neutrons and other particles.
D)when the nuclei of several atoms split simultaneously.

Question

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The Answer of A nuclear chain reaction occurs
A)when an atoms splits.
B)when neutrons released from a splitting atom colliding with the nucleus of another atom,causing it to split.
C)when a rapidly moving neutron collides with an electron causing it to split into neutrons and other particles.
D)when the nuclei of several atoms split simultaneously.

A Nuclear Chain Reaction Occurs