sodium and oxygen are both elements.In what way are sodium atoms different from oxygen atoms?
(1) They have different numbers of electrons.
(2) They have different numbers of neutrons.
(3) They have different numbers of protons.
(4) They have different types of protons.
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(1) They have different numbers of electrons.
(2) They have different numbers of neutrons.
(3) They have different numbers of protons.
these are correct I don't know about the last one.
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