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Chemistry, 12.10.2020 14:01 hncriciacheichi

ASAP MULTIPLE CHOICE WILL MARK BRAINLIEST What is the composition of an isotope of calcium (atomic number 20)?

19 protons, 20 neutrons, 19 electrons
21 protons, 20 neutrons, 20 electrons
20 protons, 25 neutrons, 20 electrons
22 protons, 20 neutrons, 19 electrons

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