Describe the reasons why the rates of strontium and barium with water is different
Barium reacts quicker with water than strontium as it has a lower first ionisation energy than strontium as barium has a larger atomic radius and so their is more shielding for the outer electrons. although barium has a greater nuclear charge than strontium which would decrease the reaction rate, this effect is outweighed by the other two factors mentioned. Barium therefore reacts faster with water than with strontium
ME
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