Question

question 5 of 32 what is the formula for strontium oxide? a. sr₂o₂ b. sro₂ c. sro d. sr₂o

Explanation:

Step1: Determine strontium's charge

Strontium (Sr) is in group 2 of the periodic - table and has a charge of +2 ($Sr^{2 +}$) as it loses 2 electrons to achieve a stable electron configuration.

Step2: Determine oxygen's charge

Oxygen (O) is in group 16 of the periodic - table and has a charge of -2 ($O^{2 -}$) as it gains 2 electrons to achieve a stable electron configuration.

Step3: Combine ions to form compound

To form a neutral compound, the charges must balance. Since the charge of $Sr^{2 +}$ and $O^{2 -}$ are equal in magnitude but opposite in sign, the ratio of Sr to O is 1:1. The formula for strontium oxide is SrO.

Answer:

C. SrO