An atom of which of the following elements has the largest first ionization energy?

Question

Quizplus · Accepted Answer

Boron (B) has the largest first ionization energy among the options given. Ionization energy generally increases across a period from left to right in the periodic table due to the increasing nuclear charge which attracts the electrons more strongly, making them harder to remove. Boron is located to the right of the other elements listed (when considering their most common forms in the periodic table), thus it has a higher first ionization energy.

An Atom of Which of the Following Elements Has the Largest