Which of the following elements forms the most ionic bond with chlorine?

Question

Quizplus · Accepted Answer

Cs belongs to group 1 and has only one valence electron which makes it easier to lose that electron and forms a 1+ ion. Let's compare Cs with the other choices: Ar is a noble gas and therefore does not form an ionic bond. Ga has 3 valence electrons and needs to lose all 3 to form a 3+ ion. P has 5 valence electrons and needs to gain 3 electrons to form a 3- ion. I is in the same group as Cl and needs to gain only one more electron to form a 1- ion. Therefore, Cs forms the most ionic bond with Cl among the given choices.

Which of the Following Elements Forms the Most Ionic Bond