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英语懂的 来拿分 11.How many neutrons and pro tons are in an atom of

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英语懂的 来拿分 11.How many neutrons and pro tons are in an atom of phosphorus
11.How many neutrons and pro tons are in an atom of phosphorus-31,atomic number 15,and determine how many electrons should be in the first,second,third,and fourth energy levels?
英语懂的 来拿分 11.How many neutrons and pro tons are in an atom of
原子序数15的磷31原子中,质子数和中子数是多少?并确定核外电子分布中,第一、第二、第三和第四能量层上各有多少个电子?
再问： 不是要翻译 是要你告诉我 怎么做
再答： 质子数：15，中子数：16 核外电子数：15 第一层：2 第二层：8 第三层：5
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