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Solution: The ion has  3919 K+ A) 18 electrons, 18 protons, 21 neutro...

Question

The ion has  3919 K+

A) 18 electrons, 18 protons, 21 neutrons

B) 19 electrons, 18 protons, 20 neutrons

C) 18 electrons, 19 protons, 20 neutrons

D) 19 electrons, 19 protons, 39 neutrons

E) 18 electrons, 19 protons, 19 neutrons

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