Question

which of the following is the most reactive metal?
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Answer 1

Explanation:

Hence, Francium is the most reactive metal, which is option D. Note: Francium is a laboratory produced element and only minute quantities have been made, so it is only used for experimental purposes and Cesium is used for all practical purposes.

Answer 2

Answer:

Among the given metals, potassium is exceptionally reactive.

Explanation:

• The ionization ethalpy of potassium is minimun.

• It is the most electropositive and most recative metal.

• It reacts with air as well as water vigorosuly.

• The reactions are highly exothermic and hence, the hydrogen gas evolved as by product catches fire.