Question

The radii of the sodium and potassium ions are 102 pm and 138 pm, respectively. which compound has stronger ionic at- tractions, sodium chloride or potassium chloride?

Answer 1

• The NaCl has more attraction as compare to KCl.

Step-by-step explanation:

• As we know down the group size is increases.
• As the size of K is greater than Sodium.
• Due to greater size of atom, the distance between the K and Cl is greater than NaCl .
• Due to greater distance between the atoms , attraction become less.

Summary:

• Greater size (greater radius) between atoms , lesser will be attraction.