Which statement best describes the nucleus of an aluminum atom?
(1) It has a charge of + 13 and is surrounded by a total of 10 electrons.
(2) It has a charge of + 13 and is surrounded by a total of 13 electrons.
(3) It has a charge of - 13 and is surrounded by a total of 10 electrons.
(4) It has a charge of - 13 and is surrounded by a total of 13 electrons.
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