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Which consequence results when xenon gas accumulates excessively in a nuclear fuel rod?

A)Neutron flux within the core decreases
B)Fuel cladding temperature becomes lessened
C)Criticality of the reactor increases
D)Coolant flow rate requirement is reduced

💡 Explanation

Neutron flux decreases because xenon-135 isotope product absorbs many neutrons, an instance of neutron poisoning. This mechanism reduces the chain reaction because it lowers available neurons, therefore suppressing fission events rather than increasing criticality.

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