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Which of the following is a property of metalloids?
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2. Atoms & Elements
Periodic Table: Classifications
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Which of the following elements is classified as a transuranium element?
A
Gold (Au)
B
Uranium (U)
C
Plutonium (Pu)
D
Lead (Pb)
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Understand the definition of transuranium elements: these are elements with atomic numbers greater than that of uranium (atomic number 92).
Identify the atomic numbers of the given elements: Gold (Au) has atomic number 79, Uranium (U) has atomic number 92, Plutonium (Pu) has atomic number 94, and Lead (Pb) has atomic number 82.
Compare each element's atomic number to 92 to determine if it is transuranium (i.e., atomic number > 92).
Recognize that Plutonium (Pu), with atomic number 94, is the only element in the list with an atomic number greater than 92, classifying it as a transuranium element.
Conclude that Plutonium (Pu) is the correct answer because it fits the definition of a transuranium element.
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