Across a Row in the Periodic Table, the Ionization Energy $\ell$

question 54

Multiple Choice

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

• A) increases because the n quantum number changes.
• B) increases because the \(\ell\) 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 all are in the same shell.

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