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weqwewe [10]
3 years ago
10

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

Chemistry
1 answer:
rjkz [21]3 years ago
7 0
It’s mass number would be 5 as it’s the protons and the neutrons added together
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<u>Given: </u>

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