Which of the following electronic configuration represents a highly electropositive element?

[H e] 2 s^{1}

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[X e] 6 s^{1}

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[H e] 2 s^{2}

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[X e] 2 s^{2}

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Solution

The correct option is B $[X e] 6 s^{1}$
Alkali metals are more electropositive than alkaline earth metals. The electropositive nature of alkali metals increases with increase in the atomic number. $[X e] 6 s^{1}$ represents the electronic configuration of cesium. Hence among the given metals, cesium is highly electropositive metal.

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Which one of the following represents the electronic configuration of the most electropositive element

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