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.

---

Definitions:

Psychomotor Impairment

Involves a decrease or change in motor and coordination skills, often as a result of psychological or neurological conditions.

Older People

Individuals who are in the later stages of their life, often defined as being 65 years and older.

Schizophrenia

A long-term mental disorder involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception, inappropriate actions, and feelings, withdrawal from reality and personal relationships into fantasy and delusion, and a sense of mental fragmentation.

Adolescents

Individuals typically between the ages of 10 and 19 years, characterized by physical, psychological, and social developmental changes.