Question

Lanthanides (Ln) when heated with carbon at 2773K form product with general formula

• A. \( {LnC} \)
• B. \( {Ln}_2{C}_3 \)
• C. \( {LnC}_3 \)
• D. \( {LnC}_2 \)
• E. \( {Ln}_3{C}_2 \)

Hint:

Lanthanides, when heated with carbon at high temperatures, typically form binary compounds known as lanthanide carbides, with the general formula \( {LnC}_2 \).

Answer 1

The Correct Option is D

When lanthanides (Ln) react with carbon at high temperatures (2773K), they form products with a general formula of \( {LnC}_2 \), a carbide. 
Thus, the correct answer is (D).