【Daily Question】Theoretical Foundation 2020.06.22

2020-06-22View Original

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Multiple-choice question: For a element in the 4th period, when its atom loses one electron to become a +1 valence ion, the valence shell electron configuration of this ion is 3d10. What is the atomic number of this element? A. 19 B. 24 C. 29 D. 36 Answer: C Hint: Extra rewards will be given to those who can explain the solution process; the answer can be found in the response

Reply #22020-06-22

C 2+8+8+10+1=29

Reply #32020-06-22

C.1s2, 2s22p6, 3s23p63d10 + 1 = 29

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【Daily Question】Theoretical Foundation 2020.06.22

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