Which of the following properties has a larger value for lithium (Li) than for potassium (K)?

Step 3: Analyze each property: - First ionization energy generally decreases down a group because electrons are farther from the nucleus and more shielded. - Metallic character increases down a group because atoms more readily lose electrons. - Atomic radius increases down a group due to the addition of electron shells. - Number of electron shells increases down a group as well.

Step 4: Compare lithium and potassium for each property: - Lithium has fewer electron shells than potassium. - Lithium has a smaller atomic radius than potassium. - Lithium has a higher first ionization energy than potassium. - Lithium has less metallic character than potassium.