Question

how many oxygen atoms are in al(so₄)?
3
17
12
4

Explanation:

Step1: Analyze the formula

In the formula \(Al_2(SO_4)_3\), the sub - script outside the sulfate ion (\(SO_4\)) is 3.

Step2: Calculate the number of oxygen atoms

Each sulfate ion (\(SO_4\)) has 4 oxygen atoms. Using the formula \(n = 4\times3\) (where \(n\) is the number of oxygen atoms).

Answer:

12