Which of the following noble gases is likely to have the smallest ionization energy?
A) Xe
B) Kr
C) He
D) Ne
E) Ar

Name: Which of the following noble gases is likely to have the smallest ionization energy? A) Xe B) Kr C) He D) Ne E) Ar
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Question

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Xenon (Xe) has the smallest ionization energy among the listed noble gases because it is the heaviest and has the largest atomic radius, allowing its outermost electrons to be removed more easily due to the lower effective nuclear charge experienced by these electrons.

Which of the Following Noble Gases Is Likely to Have