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Physics 9 Online
OpenStudy (anonymous):

Scientists have discovered just over _____ different elements with unique properties. A. 400 B. 200 C. 50 D.100

OpenStudy (anonymous):

i will give you a medal for help..............and a cupcake

OpenStudy (insa):

as far as i read, it says 118 elements have been discovered so... i guess its D

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