객관식
The nucleus of an atom has all of the following characteristics except that it:
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- 1. Intro to General Chemistry3h 46m
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- 24. Transition Metals and Coordination Compounds3h 19m
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- Magnetic Properties of Complex Ions: Octahedral Complexes11m
2. Atoms & Elements
The Atom
Multiple Choice
Which pair of elements has atomic numbers that add up to 200?
A
Uranium (U, 92) and Tin (Sn, 50)
B
Gold (Au, 79) and Lead (Pb, 82)
C
Platinum (Pt, 78) and Mercury (Hg, 80)
D
Radon (Rn, 86) and Francium (Fr, 87)
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검증된 단계별 안내1
Identify the atomic numbers of each element in the given pairs. For example, Uranium (U) has an atomic number of 92, Tin (Sn) has 50, and so on.
Add the atomic numbers of the elements in each pair. For instance, for Uranium and Tin, calculate \(92 + 50\).
Repeat the addition for each pair: Gold (79) and Lead (82), Platinum (78) and Mercury (80), Radon (86) and Francium (87).
Compare the sums obtained for each pair to see which one equals 200.
Select the pair whose atomic numbers add up to 200 as the correct answer.
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