1. Describe the trend in halogen reactivity as one progresses down the Group. Ex
ID: 916146 • Letter: 1
Question
1. Describe the trend in halogen reactivity as one progresses down the Group. Explain the trend in terms of the valence electron shell configuration of halogen atoms and the relative stability of the product formed when a halogen reacts.
2. Explain why a less reactive halogen is isolated in the dichloroemthane (CH2CL2) layer?
For number 2, I think it has to do with solubility and electronegative for a less reactive halogen but I am not sure.
PLEASE EXPLAIN WHY/HOW YOU GOT TO THE ANSWERS. I DO NOT WANT JUST AN ANSWER I WANT AN EXPLAINATION. THANK YOU :)
Explanation / Answer
1) The halogen reactivity increases down the group because of less bond dissociation energy of X-X bond.
Hence I2 reacts fast as compared to F2. But The product stability decreases after the reaction with high reactive halogen. The same reason would be applied for this because of increasing of bond length. If suppose if we consider methyl halides. CH3I is less stable and more reactive than CH3F.
2) The less reactive halogen is easily forms dipole-dipole interactions with methylene dichloride. so it would be easily separable by using it. But more reactive halogen immediately can be dissociated as individual halogen species which can't be separable.
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