Which element has the largest atomic radius among Na, Mg, Si and Cl?

Options

  • A. Sodium
  • B. Magnesium
  • C. Silicon
  • D. Chlorine
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. Sodium

Detailed Explanation

All four elements are in Period 3. Atomic radius decreases from left to right, so sodium has the largest atomic radius.