Consider two different isotopes of the same neutral element. Which statements about these isotopes are true? (There may be more than one correct choice.)
A) Both isotopes contain the same number of orbital electrons.
B) The sum of the protons and neutrons is the same for both isotopes.
C) Both isotopes contain the same number of protons.
D) Both isotopes contain the same number of neutrons.
E) Both isotopes contain the same number of nucleons.
A, C
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