Physics, 30.09.2019 11:00, evy22

In which of these cases do we have enough information to say that the atom is electrically neutral?

a. the atom has 15 neutrons and 15 electrons.
b. the atom has 7 protons and 7 electrons.
c. the atom has 4 neutrons and 4 protons.
d. the atom has 19 electrons and 19 neutrons.

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In which of these cases do we have enough information to say that the atom is electrically neutral?...