question_answer

The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the nucleus to the boundary of the surrounding cloud of electrons.

A)  \[C{{l}^{+}}<C{{l}^{-}}<Cl\]        

B)  \[C{{l}^{+}}<Cl<C{{l}^{-}}\]

C)  \[C{{l}^{-}}<Cl<C{{l}^{+}}\]        

D)  \[Cl<C{{l}^{+}}<C{{l}^{-}}\]

Correct Answer: B

Solution :

As number of proton compared to number of electron increases nuclear size decreases.