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Chemistry, 27.09.2021 02:00 kiki8734

If I add up the atomic numbers of the elements tin-119, I, boron, and the element in the 17th group of the 4th period on the periodic table, what total value would I get?

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If I add up the atomic numbers of the elements tin-119, I, boron, and the element in the 17th group...
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