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Social Sciences 12 Online
OpenStudy (anonymous):

The first periodic table was developed by Mendeleev. Chadwick. Thomson. Bohr.

OpenStudy (anonymous):

idk what do u think?

OpenStudy (anonymous):

Bohr but I can't risk getting this wrong

OpenStudy (anonymous):

Mendeleev.

OpenStudy (anonymous):

that`s the right answer

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