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Chemistry, 10.12.2020 02:50 connorvoss5805

Alom A has an atomic number of 19 and mass number of 40 Atom B has an atomic number of 20 and a mass number of 40 Which of these is an accurate statement?

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Alom A has an atomic number of 19 and mass number of 40 Atom B has an atomic number of 20 and a mass...

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