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A) \[FeS{{O}_{4}}\]
B) \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]
C) \[C{{u}_{2}}S{{O}_{4}}\]
D) \[MgS{{O}_{4}}.7{{H}_{2}}O\]
Correct Answer: B
Solution :
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