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Physics, 22.06.2019 21:00 cici65360

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.

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What do the atoms of elements in the same group have in common? a. they have the same atomic number...

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