Out of Fluoride ion and Iodide ion which one is a better nucleophile and why?
Answer:
Out of Fluoride and Iodide ions, Iodide ion is less electronegative and has high tendency to release electron density. Moreover it is large and hence can easily be polarized. Also, because of the larger size Iodide ion is soft and prefers to form bonds with soft species like carbocations. So, Iodide ion is a strong nucleophile out of the two.
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