Which of the following elements would have the largest first ionization energy?

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Question: Which of the following elements would have the largest first ionization energy?

Options:

Correct Answer: Carbon

Solution:

Carbon has a larger first ionization energy than lithium, beryllium, and boron due to its higher effective nuclear charge.

Which of the following elements would have the largest first ionization energy?

Which of the following elements would have the largest first ionization energy?

Step 1: Understand what first ionization energy means. It is the energy required to remove the outermost electron from an atom.
Step 2: Know that elements in the same group (column) of the periodic table have similar properties, including ionization energy.
Step 3: Recognize that as you move from left to right across a period (row) in the periodic table, the first ionization energy generally increases.
Step 4: Compare the elements given: lithium (Li), beryllium (Be), boron (B), and carbon (C).
Step 5: Identify their positions in the periodic table: Li is in group 1, Be is in group 2, B is in group 13, and C is in group 14.
Step 6: Note that carbon is further to the right than lithium, beryllium, and boron, which means it has a higher first ionization energy.
Step 7: Understand that carbon has a higher effective nuclear charge, meaning it holds its electrons more tightly, requiring more energy to remove one.

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