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What is the effect on ionization energy when we move from left to right across periods in the periodic table?

31. What is the effect on ionization energy when we move from left to right across periods in the periodic table?

1. Ionization energy increases
2. Ionization energy decreases
3. Remain same
4. None of the above

Answer

The correct answer is: A) Ionization energy increases

Explanation

Because the effective nuclear charge increases, ionization energies increase from left to right.