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Which outcome occurs when transuranic isotopes reach critical size, exceeding binding strengths within reactor fuel?

A)Uncontrolled nuclear chain reaction begins
B)Coolant flow dramatically increases
C)Neutron moderation becomes more efficient
D)Gamma ray emission abruptly declines

💡 Explanation

An uncontrolled chain reaction begins because critical mass enables sustained exponential fission via neutron multiplication. Neutron multiplication overcomes the electromagnetic "nuclear force binding energy", rather than causing altered moderation or reduced gamma emissions because these pertain to reaction control and byproduct phenomena.

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