Question

Among the following the weakest Bronsted base is

(a) F– (b) Cl– (c) Br–

(d) I–​

Answer 1

Answer:

D is the correct answer Iodide

Answer 2

Among the following, the weakest Bronsted base is F– (fluoride ion) (a).

• This is because, in the Bronsted-Lowry theory, a base is a proton acceptor. The strength of a base depends on its ability to accept protons.
• The weaker the base, the less likely it is to accept protons.
• In the case of halide ions (F–, Cl–, Br–, I–), the size of the ion plays an important role in determining its basicity.
• As we move down the group, the size of the ion increases, which makes it easier for the ion to accept protons. Therefore, I– is the strongest base among the halide ions.
• On the other hand, F– is the smallest halide ion, and its small size makes it difficult for the ion to accept protons. Therefore, F– is the weakest Bronsted base among the halide ions.

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