Physics, 17.09.2019 01:30 youngboymark123

What is the frequency of this wave?

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Physics, 22.06.2019 11:30, chelsilconway2262

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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.