What is the primary reason for the increase in ionization energy across a period

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Question: What is the primary reason for the increase in ionization energy across a period in p-block elements? (2023)

Options:

Correct Answer: Increase in nuclear charge

Exam Year: 2023

Solution:

The increase in nuclear charge across a period leads to higher ionization energy.

What is the primary reason for the increase in ionization energy across a period in p-block elements? (2023)

What is the primary reason for the increase in ionization energy across a period in p-block elements? (2023)

Step 1: Understand what ionization energy is. It is the energy required to remove an electron from an atom.
Step 2: Know that p-block elements are found in groups 13 to 18 of the periodic table.
Step 3: Recognize that as you move from left to right across a period, the number of protons in the nucleus increases. This is called an increase in nuclear charge.
Step 4: Realize that a higher nuclear charge means a stronger attraction between the nucleus and the electrons.
Step 5: Understand that because of this stronger attraction, it becomes harder to remove an electron, which means the ionization energy increases.

No concepts available.