bethanygraceandrews bethanygraceandrews

20-09-2021
Chemistry

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If an atom or ion has an atomic number of 3, 2 electrons, and the electronic configuration is 2, what is the mass number?

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17StewartI 17StewartI

20-09-2021

It’s mass number would be 5 as it’s the protons and the neutrons added together

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