Question

Which of the following is least ionic ?

• A. $BaCl_2$
• B. AgCl
• C. KCl
• D. $CoCl_2$

Answer 1

Answer: (B)

AgCl

Answer 2

The order of ionic character among the compounds is:

$\text{AgCl} < \text{CoCl}_2 < \text{BaCl}_2 < \text{KCl}$
The reason is that $\text{Ag}^+$ has a pseudo-inert gas configuration, making $\text{AgCl}$ less ionic than the other compounds listed.