Engineering
Chemistry
Atomic and Ionic Radius
Question

The increasing order of atomic radii of the following Group 13 elements is

Ga < Al < In < Tl

Al < In < Ga < Tl

Al < Ga < Tl < In

Al < Ga < In < Tl

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Solution

Ga        <          Al         <          In         <          Tl

135                 143                   167                   170 pm