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Clearnote
Q&A
Senior High
Chemistry
求解🙏🏻🙏🏻
Chemistry
Senior High
about 1 yearago
💡
求解🙏🏻🙏🏻
31. 甲、乙、丙三元素週期表的位置相接鄰而且均在前三週期,已知: (a)其中有一元素與另一元素同週期,同時又與第三元素同族 (b)該三元素的原子序為甲小於乙,乙小於丙 (c)該三元素的原子序總和是該三元素的各原子最外層電子數總和的2倍加1 試回答下列問題: (1)寫出符合上述條件之甲、乙、丙三元素的元素符號。(2分) (2)寫出丙元素的核外電子排列。(2分) (3)將甲、乙、丙三元素之原子半徑以元素符號由大而小排列之。(2分) 試題至此結束 34+9 必 X+1 乙 ³y-7 3W-9 甲乙 k 西/ +8 32+7
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