Question:
van-Arkel method of purification of metals involves converting the metal to a:
van-Arkel method of purification of metals involves converting the metal to a:
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In the van-Arkel method, a metal is converted into a volatile stable compound to purify it.
Updated On: Apr 22, 2026
- Volatile stable compound
- Non-volatile stable compound
- Volatile unstable compound
- None of the above
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the van-Arkel method.
The van-Arkel method is used for the purification of metals by converting the metal into a volatile compound, which can then be decomposed to obtain pure metal.
Step 2: Explanation of the options.
- (1) Volatile stable compound: This is the correct option. In the van-Arkel method, the metal is first converted into a volatile stable compound.
- (2) Non-volatile stable compound: This is not the method used in van-Arkel's purification technique.
- (3) Volatile unstable compound: While volatility is involved, the compound is stable and not unstable.
- (4) None of the above: This option is incorrect as option (1) is the correct answer.
Step 3: Conclusion.
The correct answer is (1) Volatile stable compound.
The van-Arkel method is used for the purification of metals by converting the metal into a volatile compound, which can then be decomposed to obtain pure metal.
Step 2: Explanation of the options.
- (1) Volatile stable compound: This is the correct option. In the van-Arkel method, the metal is first converted into a volatile stable compound.
- (2) Non-volatile stable compound: This is not the method used in van-Arkel's purification technique.
- (3) Volatile unstable compound: While volatility is involved, the compound is stable and not unstable.
- (4) None of the above: This option is incorrect as option (1) is the correct answer.
Step 3: Conclusion.
The correct answer is (1) Volatile stable compound.
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