Identify the alkali metal that is most reactive with water.
A) Cs
B) Rb
C) K
D) Na
E) Li

Name: Identify the alkali metal that is most reactive with water. A) Cs B) Rb C) K D) Na E) Li
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Question

Quizplus · Accepted Answer

The alkali metal with the lowest ionization energy and highest electropositivity is cesium (Cs), which makes it the most reactive with water. When it reacts with water, it forms CsOH and releases hydrogen gas as shown by the equation: 
2Cs + 2H2O → 2CsOH + H2.

Identify the Alkali Metal That Is Most Reactive with Water