Question

Calcium forms ions with a charge of +2. Iodine forms ions with a charge of -1.
Which of the following would represent an ionic compound composed of Calcium and Iodide ions?

options:
CaI2 <--- lower 2
CaI
Ca2I <--- lower2
Ca2I
2CaI
CaI2

Answer 1

Answer:

CaI2

Here 2 will be small or lower like depicted in figure

Explanation:

CaI2 or Calcium Iodide is the ionic compound formed when calcium and Iodine react with each other. If we talk about physical properties it is a salt that is colorless and highly soluble in water. It is used a s a food for cats and other properties are similar to the salts of related type like calcium chloride.

It also takes part in many single displacement reaction, such as below mentioned where sodium displaces calcium with itself:

CaI2 + 2 Na → 2 NaI + Ca

Hope it helps!