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Plutonium

/pluˈtoʊniəm/
B2
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(noun) The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air.

Plutonium has a metallic taste.
Uranium and plutonium are radioactive.
CEFR Practice Quiz
The nuclear reactor used enriched ____ as fuel to generate electricity for the surrounding region.

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