Down a Column in the Periodic Table, the Ionization Energy $\ell$

question 26

Multiple Choice

Down a column 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 outer electrons are further from the nucleus.
• D) increases because the atomic number (nuclear charge) increases.
• E) changes little because the outer electrons all are in the same outer shell.