Assertion: Zirconium can be purified by Van Arkel method. Reason: ZrI4 is volatile and decomposes at 1800K.
Assertion: Zirconium can be purified by Van Arkel method. Reason: ZrI4 is volatile and decomposes at 1800K.

(i) Both assertion and reason are true and the reason is the correct explanation of assertion.

(ii) Both assertion and reason are true but the reason is not the correct explanation of assertion.

(iii) The assertion is true but the reason is false.

(iv) The assertion is false but the reason is true.

(v) Assertion and reason both are wrong.

 

Correct Answer: (i) Both assertion and reason are true and the reason is the correct explanation of assertion.

Explanation: 

Reactions Involved:-

Zr + 2I2 → Zrl4

(At 1800K) Zrl4 → Zr + 2I2