gsfan11 gsfan11

13-11-2016
Chemistry

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What is the mass number of an isotope of this atom that has 2 neutrons (Shows 1 Proton in picture

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Nickiii16 Nickiii16

13-11-2016

Mass number = # of protons + # of neutrons.
Therefore, the mass number is 2+1 = 3
This is probably a Hydrogen isotope called Tritium that contains 2 neutrons, 1 proton, and has a mass number of 3.

Hope that helps.

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