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Which of the following set is having cor...

Which of the following set is having correct statements here regarding both B and Al?
1. They react with HCl to form chlorides
2. Both boron and aluminium react with nitrogen.
3. They burn in oxygen to give oxides at high temperature
4. Their halides are Lewis acids

A

1, 4

B

3, 4

C

2, 3, 4

D

1, 2, 3, 4

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statements are correct regarding both boron (B) and aluminum (Al), we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Statement 1: They react with HCl to form chlorides.** - **Analysis:** Boron does not react with hydrochloric acid (HCl), even when boiling. In contrast, aluminum reacts with HCl to produce aluminum chloride (AlCl3) and liberates hydrogen gas. Therefore, this statement is **incorrect**. 2. **Statement 2: Both boron and aluminum react with nitrogen.** - **Analysis:** Both boron and aluminum do react with nitrogen. Boron reacts with nitrogen to form boron nitride (BN), and aluminum reacts with nitrogen to form aluminum nitride (AlN). Hence, this statement is **correct**. 3. **Statement 3: They burn in oxygen to give oxides at high temperature.** - **Analysis:** Both elements can burn in oxygen. Boron burns to form boron trioxide (B2O3), and aluminum burns to form aluminum oxide (Al2O3). Therefore, this statement is also **correct**. 4. **Statement 4: Their halides are Lewis acids.** - **Analysis:** The halides of both boron (BX3) and aluminum (AlX3) are electron-deficient and can accept electrons, making them Lewis acids. Thus, this statement is **correct**. ### Summary of Findings: - Statement 1: Incorrect - Statement 2: Correct - Statement 3: Correct - Statement 4: Correct ### Conclusion: The correct statements regarding both boron and aluminum are **2, 3, and 4**. Therefore, the answer is that the set containing statements 2, 3, and 4 is correct. ---
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