Which of the following metals occurs in nature principally as oxide ores?
A)Li
B)Cu
C)Cr
D)Ru

Question

Quizplus · Accepted Answer

Chromium (Cr) occurs in nature principally as oxide ores such as chromite (FeCr2O4) and is usually extracted from these ores through reduction with aluminum or silicon. Lithium (Li) does not occur as oxide ores, but rather as salts in brine or rock deposits. Copper (Cu) occurs as sulfide, carbonate, and oxide ores. Ruthenium (Ru) occurs mainly in platinum group metal ores.

Which of the Following Metals Occurs in Nature Principally as Oxide