question_answer

The correct radius order of atom, its cation and anion is

A)  atom < cation > anion

B)  atom > cation < anion

C)  atom = cation = anion

D)  atom > cation > anion

Correct Answer: B

Solution :

 The radius of cation is smaller than its atomic radius while the radius of anion is greater than its atomic radius. Hence, increasing order of radius is as cation < atom < anion