Place the following in order of increasing radius. Br⁻, Na⁺, Rb⁺

Question

A. Br⁻ < Rb⁺ < Na⁺

B. Br⁻ < Na⁺ < Rb⁺

C. Rb⁺ < Na⁺ < Br⁻

D. Rb⁺ < Br⁻ < Na⁺

E. Na⁺ < Br⁻ < Rb⁺

Answer 1

Atomic radii increase going from right to left within a period in the periodic table.

Atomic radii increase going from top to bottom within a group in the periodic table.

Atomic radius increases when forming the anion.

Atomic radius decreases when forming the cation.

B. Br < Na⁺ < Rb⁺