Question

key. what is the formula for this ionic crystal? submit your answer

Explanation:

Step1: Count the number of Fe atoms

There are 4 red balls (Fe atoms) in the structure.

Step2: Count the number of O atoms

There are 6 blue balls (O atoms) in the structure.

Step3: Simplify the ratio of Fe to O

The ratio of Fe:O is 4:6. Dividing both numbers by 2 (the greatest common divisor), we get 2:3.

Answer:

\(Fe_2O_3\)