What Is The Mass Number Of An Ion With 105 Electrons, 159 Neutrons, And A +1 Charge?

(Correct Answer Below)

What Is The Mass Number Of An Ion With 105 Electrons, 159 Neutrons, And A +1 Charge?

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A = mass number = Number of protons in nucleus + Number of neutrons in nucleus Number of protons = Number of electrons + 1 ( since the charge is +1 due to lacking one electron ) Number of protons = 105 + 1 = 106 protons A = 106 protons + 159 neutrons = 265

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