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Which statement correctly describes the charge of the nucleus and the charge of the electron cloud of an atom?
(1) The nucleus is positive and the electron cloud is positive.
(2) The nucleus is positive and the electron cloud is negative.
(3) The nucleus is negative and the electron cloud is positive.
(4) The nucleus is negative and the electron cloud is negative.
The nucleus of an atom is positive, because it contains the protons (+1 charge) and neutrons (0 charge) The electron cloud has a negative charge, because electrons have a -1 charge So the answer is (2)
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