Arrange the silicon halides into decreasing order of Lewis acids Character? SiF4, SiCl4, SiBr4, SiI4

In case of silicone halides inductive effect dominate over back bonding hence Lewis acid character decided by inductive effect.

Hence order of Lewis acid character:

       [SiF₄>SiCl₄> SiBr₄ > SiI₄]

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1. How to write dehydration and ring expansion mechanism of 1-(1-cyclopentyl) methanol?
2. How to write dehydration and ring expansion mechanism of Tetrahydrofurfuryl alcohol?
3. How to write dehydration and ring expansion mechanism of 2-cyclopentylethanol?
4. Write the Dehydration and ring expansion mechanism of following alcohol:
5. Write Dehydration and ring expansion mechanism of 1-cyclobutylethanol in the presence of con H2SO4.
6. Explain the ring expansion mechanism of Bicyclic 1,2-Diols which undergoes pinacol pinacolone mechanism?
7. Explain Dehydration and ring expansion mechanism of 1-(1-Methylcyclopentyl)ethan-ol?
8. Write the major and minor product of hydration of 1 -Methylcyclopent-1-ene in acidic medium?
9. Write the major and minor product of hydrohalogenation of 2-Methylbut-1-ene in acidic medium?
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11. Why dehydration proceeds in acid but not in base?
12. Why alcohols do not undergo base induced dehydration in the same way that alkyl halides are dehydrohalogenated ?
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