P Block Elements

The correct option is(C):Diopsite, Biotite

The correct answer is : A = Xe, B = XeO₃

When Al₂C₃ (aluminum carbide) and Be₂ (beryllium) react with water, they undergo hydrolysis reactions, resulting in the formation of different compounds. Here are the reactions:
Hydrolysis of Al₂C₃: Al₂C₃ + 9H₂O → 2Al(OH)₃ + 3CH₄
In this reaction, aluminum carbide reacts with water to form aluminum hydroxide [Al(OH)₃] and methane gas (CH₄).
Hydrolysis of Be₂: Be₂ + 2H₂O → 2Be(OH)₂
Beryllium reacts with water to form beryllium hydroxide [Be(OH)₂].
It's important to note that beryllium hydroxide is amphoteric, meaning it can react both as a base and as an acid. In the presence of excess hydroxide ions, it can form soluble beryllate ions, while in the presence of excess hydrogen ions, it can form soluble beryllium ions.
The hydrolysis reactions of Al₂C₃ and Be₂ are important in understanding their chemical reactivity and behavior when exposed to water.