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OpenStudy (anonymous):
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OpenStudy (zpupster):
yes-- gaps in the periodic table he noted there were undiscovered elements that would fill in these gaps. more here: http://en.wikipedia.org/wiki/Mendeleev's_predicted_elements
OpenStudy (zpupster):
i think that is very good answer. i might say something about the traits of period 4 elemints. http://en.wikipedia.org/wiki/Period_4_element
OpenStudy (joannablackwelder):
This all looks right to me. I was just looking to see if you should add anything else.
OpenStudy (joannablackwelder):
Great answer!
OpenStudy (joannablackwelder):
Looks like it to me.
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