20 Points!!
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Chemistry, 21.06.2019 15:30
Becquerel expected to find ( he developed the photographic plate that had sun-exposed minerals on top of it. becquerel expected to find ( he developed the photographic plate that had been in the closed drawer.
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Chemistry, 22.06.2019 09:00
Ineed to find the answer of this question because i dont understand it
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Chemistry, 23.06.2019 03:30
Why do electrons further from the nucleus have more energy
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Chemistry, 23.06.2019 15:50
Many radioactive atoms that have large masses undergo radioactive decay by releasing a particle that is identical to a helium-4 nucleus. what changes in the original atom are expected as a result of this natural phenomenon? the atomic number and the mass number will decrease. the atomic number and the mass number will increase. the atomic number will increase, and the mass number will decrease. the atomic number will decrease, and the mass number will increase.
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