4 years ago

How to know what elements are least likely to form ions?

Chemistry

2 answers:

Serga [27]4 years ago

5 0

Elements in Group 0 because their electron shells are filled up so they are very stable and are mostly unreactive

viktelen [127]4 years ago

4 0

Aluminum mixed iron .Al + fe = AlFe3

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The pk of CH NH,+ equals 10.6; the pK_of (CH3)2NH,* equals 10.7. Which is the stronger base, CH NH, or (CH3)2NH²

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Explanation:

Relation between $pK_{a}$ and $pK_{b}$ is as follows.

$pK_{a} + pK_{b}$ = 14

Hence, putting the given values of $pK_{a}$ in order to calculate the value of $pK_{b}$ as follows.

For $CH_{3}NH^{+}_{3}$ : $pK_{a} + pK_{b}$ = 14

10.6 + $pK_{b}$ = 14

$pK_{b}$ = 14 - 10.6

= 3.4

For $(CH_{3})_{2}NH^{+}_{2}$ : $pK_{a} + pK_{b}$ = 14

10.7 + $pK_{b}$ = 14

$pK_{b}$ = 14 - 10.7

= 3.3

Hence, smaller is the value of $pK_{b}$ of a specie more will be the value of its $K_{b}$ . Therefore, stronger will be the base.

Thus, we can conclude that $(CH_{3})_{2}NH^{+}_{2}$ will be the stronger base.

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