Gadolinium Oxide, a Colorless Powder Which Absorbs Carbon Dioxide from the Air

question 35

Multiple Choice

Gadolinium oxide, a colorless powder which absorbs carbon dioxide from the air, contains 86.76 mass % Gd. Determine its empirical formula.

• A)Gd ₂O ₃
• B)Gd ₃O ₂
• C)Gd ₃O ₄
• D)Gd ₄O ₃
• E)GdO

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Definitions:

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