SAT Chemistry

Category - Multiple Choice

Which of the following elements has the largest atomic radius?
  1. Lithium
  2. Boron
  3. Fluorine
  4. Potassium
  5. Rubidium
  6. Oxygen
  7. Chlorine
  8. Bromine
  9. Iodine
Explanation
Answer: Iodine

Atomic radius decreases going across a period and increases going down a group. In this problem, you must consider both effects. Traveling across a period adds only one electron at a time. Traveling down a group adds another additional shell of electrons. Thus, the effect of traveling down a group is more significant, and iodine has the largest atomic radius.
Was this helpful? Upvote!
Login to contribute your own answer or details

Top questions

Related questions

Most popular on PracticeQuiz