What is the ionization energy trend across a period?

What is the ionization energy trend across a period?

Step 1: Understand what ionization energy is. It is the energy required to remove an electron from an atom.
Step 2: Know what a period is. A period is a row in the periodic table of elements.
Step 3: Recognize that as you move from left to right across a period, the number of protons in the nucleus increases.
Step 4: Realize that more protons mean a stronger positive charge in the nucleus, which attracts electrons more strongly.
Step 5: Understand that because of this stronger attraction, it becomes harder to remove an electron, leading to higher ionization energy.
Step 6: Conclude that ionization energy generally increases as you move from left to right across a period.

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