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Which of the following metal readily reacts with skin moisture to form rubidium hydroxide?

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Which of the following metal readily reacts with skin moisture to form rubidium hydroxide?

(a) lithium

(b) rubidium

(c) sodium

(d) potassium

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This intriguing question originated from s-Block Elements topic in portion s-Block Elements of Chemistry – Class 11

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The correct choice is (b) rubidium

Explanation: Rubidium accumulates in muscle ahead of potassium and it can stimulate metabolism. It also readily reacts with skin moisture in order to form rubidium hydroxide. This is the biological importance of the element rubidium.

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