write the name and symbol of any two elements each which comes before and after hydrogen in the reactivity series
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A good way to remember the order of a reactivity series of metals is to use the first letter of each one to make up a silly sentence. For example: People Say Little Children Make A Zebra Ill Constantly Sniffing Giraffes.
Observations of the way that these elements react with water, acids and steam enable us to put them into this series.
The tables show how the elements react with water and dilute acids:
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