Which of the following cations is least likely to form: $S r^{2 +}$ $Sr^(2+)$ , $A l^{3 +}$ $Al^(3+)$ , $K^{2 +}$ $K^(2+)$ ? Why?

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Which of the following cations is least likely to form: $S r^{2 +}$ $Sr^(2+)$ , $A l^{3 +}$ $Al^(3+)$ , $K^{2 +}$ $K^(2+)$ ? Why?

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Answer 1 · 2016-12-15T00:50:08

I would say $K^{2}$ $K^2$

Explanation:

Cations are ions with positive charges. $K$ $K$ is in Group 1 of the periodic table, meaning it only needs to lose 1 electron in order to stabilize - as it has a charge of $1^{+}$ $1^+$ Losing two electrons requires a lot of energy from $K$ $K$ - meaning that it might not be a spontaneous reaction.

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Which of the following cations is least likely to form: $S r^{2 +}$ $Sr^(2+)$ , $A l^{3 +}$ $Al^(3+)$ , $K^{2 +}$ $K^(2+)$ ? Why?

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Which of the following cations is least likely to form: Sr2+Sr^(2+), Al3+Al^(3+), K2+K^(2+)? Why?

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Which of the following cations is least likely to form: $S r^{2 +}$ $Sr^(2+)$ , $A l^{3 +}$ $Al^(3+)$ , $K^{2 +}$ $K^(2+)$ ? Why?