To determine which compounds will take up (or react with) bromine, we need to consider the nature of the compounds in question. Bromine (Br2) is a diatomic molecule that can react with unsaturated compounds, particularly those containing double or triple bonds, through an addition reaction. ### Step-by-Step Explanation: 1. **Understanding Bromine Addition**: - Bromine can add across double bonds (alkenes) or triple bonds (alkynes) in a process called electrophilic addition. This means that compounds with carbon-carbon double or triple bonds will react with bromine, while saturated compounds (like alkanes) will not react under normal conditions. 2. **Identifying the Compounds**: - Without the specific structures of compounds A, B, C, and D, we can only discuss the general characteristics that would allow a compound to react with bromine. - If we assume that: - Compound A has no double or triple bonds (saturated). - Compound B has a double bond (unsaturated). - Compound C has a triple bond (unsaturated). - Compound D is a combination of A and B. 3. **Analyzing the Options**: - **Option A (A)**: If this compound is saturated (like an alkane), it will not react with bromine. - **Option B (B)**: If this compound has a double bond, it will react with bromine, making it a correct choice. - **Option C (C)**: If this compound has a triple bond, it will also react with bromine, making it another correct choice. - **Option D (D)**: This option states that both A and B will react with bromine. If A is saturated, this option is incorrect. 4. **Conclusion**: - Since we are looking for compounds that will take up bromine, the correct answer is **B (B)** if it is the only compound with a double bond. If C also has a triple bond, it would also react, but since the question specifies only one option, we focus on the one that is clearly stated. ### Why Other Options Are Incorrect: - **Option A (A)**: This compound does not react with bromine because it is saturated. - **Option C (C)**: If this compound has a triple bond, it would also react with bromine, but since the question specifies only one option, we cannot select it if B is the only one clearly indicated. - **Option D (D)**: This option is incorrect if A is saturated, as it would not react with bromine. ### Common Pitfalls: - Confusing saturated and unsaturated compounds. Remember that only unsaturated compounds (those with double or triple bonds) will react with bromine. - Misinterpreting the question. Ensure you understand whether it asks for all compounds that react or just one. ### Revision Summary: - Bromine reacts with unsaturated compounds (double/triple bonds). - Saturated compounds (alkanes) do not react with bromine. - Identify the type of bonds in each compound to determine reactivity. - Always read the question carefully to understand what is being asked. This thorough understanding will help you tackle similar questions in your exams effectively!