What is the correct formula for the compound formed between sodium and iodine based on their positions in the periodic table? A)Na₂I B)NaI₂ C)NaI D)Na₂I₂ E)Na₃I

Question

Quizplus · Accepted Answer

Sodium (Na) is in group 1 and iodine (I) is in group 17 (or 7). Group 1 elements have a +1 charge and group 17 elements have a -1 charge when they form ions. Therefore, sodium and iodine will form a compound with the formula NaI (one sodium ion with a +1 charge and one iodine ion with a -1 charge).

What Is the Correct Formula for the Compound Formed Between