Question

The pair of elements which form a compound with maximum ionic character is

Answer 1

Answer:

Cs and F

Explanation:

As we know that

For having a maximum ionic character, the compound must have a large size of cation and small size of the anion.

As it is very clear that Caesium (Cs) is the most electropositive element and it is a large size cation also.

And

Fluorine (F) is the most electronegative element and it is also a small size anion.

Hence, they both form the most ionic product, named as Caesium fluoride (CsF).

Therefore, the pair of elements that form a compound with a maximum ionic character is Cs and F.