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Chemistry, 21.08.2019 02:00 dpchill5232

Which phrase describes an atom?
(1) a positively charged electron cloud surrounding a positively charged nucleus
(2) a positively charged electron cloud surrounding a negatively charged nucleus
(3) a negatively charged electron cloud surrounding a positively charged nucleus
(4) a negatively charged electron cloud surrounding a negatively charged nucleus

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Which phrase describes an atom?
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