Which of the elements listed below has the highest first ionization energy
A) He
B) Ne
C) Ar
D) Kr
E) Xe

Name: Which of the elements listed below has the highest first ionization energy A) He B) Ne C) Ar D) Kr E) Xe
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Question

Quizplus · Accepted Answer

Helium (He) has the highest first ionization energy among the options given. This is because it has the smallest atomic radius and its electrons are held more tightly by the nucleus, making it more difficult to remove an electron compared to the other noble gases listed.

Which of the Elements Listed Below Has the Highest First