Formula of Galena is________?
Correct answer: A. PbS
- A. PbS
- B. HgS
- C. AS2S3
- D. FeS2
Explanation
Galena is the principal ore of lead and has the formula PbS, lead(II) sulfide. HgS is cinnabar, As2S3 is orpiment, and FeS2 is pyrite. The likely wrong choice is FeS2 because both are important sulfide ores, but their metals are different.
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About Reactions of Group IV Elements
Group IV, or Group 14, chemistry covers the trends from carbon and silicon to tin and lead, including their reactions with oxygen, halogens, water, acids and alkalis. It also examines the structures and properties of their oxides and chlorides, oxidation states, and the inert pair effect, rather than treating all members as equally metallic.
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