Physics, 28.01.2020 13:38, abby186

Aneutral atom of tin (z = 50) has 69 neutrons. (a) how many protons does it have? (b) what is its mass number?

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Aneutral atom of tin (z = 50) has 69 neutrons. (a) how many protons does it have? (b) what is its m...