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    So as you go down group 1 the melting point and boiling point decreases as the number of protons increases. But in my textbook the boiling point of rhubidum increases yet its melting point decreases, i was just wondering why this is.
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    Think you've read it wrong from potassium to rhubidum boiling point decreases. (Check Wikipedia)
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    (Original post by soup)
    Think you've read it wrong from potassium to rhubidum boiling point decreases. (Check Wikipedia)
    Yeah thats what i thought as well its a typo in my text book it says the b.p/ is 1326
 
 
 
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