Across a Row in the Periodic Table, the Ionization Energy

question 52

Multiple Choice

Across a row in the periodic table, the ionization energy ________

• A)increases because the n quantum number changes.
• B)increases because the quantum number changes.
• C)decreases because the effective nuclear charge decreases.
• D)increases because the effective nuclear charge increases.
• E)changes little because the outer electrons are all in the same shell.

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