Many transition metals form interstitial compounds. The characteristics of these interstitial compounds are :
(I) They have high melting points, higher than those of pure metals
(II) They are ve

Question

Many transition metals form interstitial compounds. The characteristics of these interstitial compounds are :
(I) They have high melting points, higher than those of pure metals
(II) They are very hard
(III) They retain metallic conductivity
(IV) They are chemically more reactive than the pure metals

Prashant Kotian · Accepted Answer

Correct answer: A. Step 1: Heating sodium carbonate (Na2CO3) with iron(III) oxide (Fe2O3) at high temperatures leads to a solid-state reaction with the evolution of carbon dioxide gas. Step 2: The balanced chemical equation is: Na2CO3 + Fe2O3 --Δ--> 2NaFeO2 + CO2. Step 3: The product A is sodium ferrite (NaFeO2), which corresponds to option (a).

💡 Solution & Explanation

Practice 22,000+ questions like this