Chemistry, 26.10.2020 17:00 scholarlystudenttt28
An entire group of elements was unknown when the periodic table was first developed because they were unreactive and no known compounds were composed of them.
What most likely led to the inclusion of these elements in the periodic table?
the formation of a compound in the laboratory
new technology that showed how to identify one of the elements
improvements in instruments to measure small masses
more careful experiments to create synthetic elements
Answers: 3
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An entire group of elements was unknown when the periodic table was first developed because they wer...
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