Question

LiCl has rock salt structure with an edge length of $6.0\mathring{A}$. If anions are in contact, the ionic radius (in $\mathring{A}$) of chloride ion is :

• A. $2.12$
• B. $1.82$
• C. $4.24$
• D. $3.68$

Answer 1

The correct option is A $2.12$

In NaCl type structure, Given that the anions are in contact, therefore
$\sqrt{2}a=4\left(r_{-}\right)$
$\therefore r_{-}=2.12\mathring{A}$

Hence, the ionic radius of chloride ion is $2.12\mathring{A}$.