An Ionic Compound of Iron and Sulfur Has a Crystal

question 60

Multiple Choice

An ionic compound of iron and sulfur has a crystal structure in which sulfide ions create an fcc lattice and iron ions occupy half of the available tetrahedral holes.What is the empirical formula of the compound?

• A)FeS₂
• B)FeS
• C)Fe₂S₃
• D)Fe₃S₄
• E)More information is needed.

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