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Use your knowledge of periodic trends to predict which element reacts most vigorously with water to produce hydrogen gas. h, He, Fr, rn or rh
Accepted Answer
Sure, I can predict which element reacts most vigorously with water to produce hydrogen gas using periodic trends.
The reactivity of an element with water can be predicted based on its position in the periodic table. Generally, the more reactive elements are found:
* In the lower left-hand corner of the periodic table
* In the same group (vertical column) as hydrogen
Based on this, the element that is expected to react most vigorously with water is Fr (Francium), since it is in the lower left-hand corner and in the same group as hydrogen.
Fr + H2O → FrOH + H2
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