Question

Atomic radii of fluorine atom and neon atom (in angstrom units) are respectively given by :

• A. 0.72, 1.60
• B. 1.60, 1.60
• C. 0.72, 0.72
• D. 1.60, 0.762

Answer 1

The correct option is A 0.72, 1.60

Atomic radii decreases on going from left to right in a period due to increase in Z-effective. Thus, halogens have minimum atomic radius. For noble gases, their Van der Waal's radius is measured. Van der waal's radius is largest. Thus, noble gases have highest radius in a particular period.

Atomic radii of fluorine and neon atom in angstrom units are 0.72 and 1.60 respectively.

Option A is correct.