calcium (ca) is in the second column of the periodic table and is classified as an alkaline earth metal…

calcium (ca) is in the second column of the periodic table and is classified as an alkaline earth metal. which of the following formulas shows the ratio of a compound formed from calcium and iodine (i)? a. cai b. ca₂i c. cai₂ d. cai₃

calcium (ca) is in the second column of the periodic table and is classified as an alkaline earth metal. which of the following formulas shows the ratio of a compound formed from calcium and iodine (i)? a. cai b. ca₂i c. cai₂ d. cai₃

Answer

Explanation:

Step1: Determine calcium's charge

Calcium in group 2 has a +2 charge ($Ca^{2 +}$).

Step2: Determine iodine's charge

Iodine in group 17 has a -1 charge ($I^{-}$).

Step3: Balance charges

To form a neutral compound, we need 2 iodine ions for 1 calcium ion. So the formula is $CaI_{2}$.

Answer:

C. $CaI_{2}$