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ratelena [41]
3 years ago
15

Which of the following Group 1A elements is the most reactive?

Chemistry
2 answers:
Alisiya [41]3 years ago
7 0
A. Cesium because reactivity of alkali metals increases from the top to the bottom of the group.
Strike441 [17]3 years ago
3 0
Hello,

Your correct answer would be <span>Cs (cesium).

Hope this helps.

-Jurgen :D</span>
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For alkyl halides used in SN1 and SN2 mechanisms, rank the leaving groups in order of reaction rate. You are currently in a rank
Alex777 [14]

Answer:

Iodide> Bromide > chloride > flouride

Explanation:

During a nucleophilic substitution reaction, a nucleophilie replaces another in a molecule.

This process may occur via an ionic mechanism (SN1) or via a concerted mechanism (SN2).

In either case, the ease of departure of the leaving group is determined by the nature of the C-X bond. The stronger the C-X bond, the worse the leaving group will be in nucleophilic substitution. The order of strength of C-X bond is F>Cl>Br>I.

Hence, iodine displays the weakest C-X bond strength and it is thus, a very good leaving group in nucleophillic substitution while fluorine displays a very high C-X bond strength hence it is a bad leaving group in nucleophilic substitution.

Therefore, the ease of the use of halide ions as leaving groups follows the trend; Iodide> Bromide > chloride > flouride

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2 years ago
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ale4655 [162]

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How that helps. :)

3 0
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