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How would you determine a given element with respect to melting point and boiling point? i.e.  High or Low!
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ANS.ASAP!

Dear Student.

Boiling points increase and then decrease as the atomic number increases within a period.
Boiling temperatures are generally higher than melting temperatures. The greatest
differences between melting and boiling temperatures occur for elements in the middle of the period.

 
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As you move from the top to bottom of the periodic table you will find a rough correlation exists between atomic mass of the elements and their boiling points . Lighter elements such as hydrogen and helium tend to have very low boiling points and elements with greater atomic mass boil at higher temperatures. The atomic mass affects the forces between atoms which in turn determine boiling points. Using the atomic mass we can find out which element it is.
 
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