What's the mass number of tritium?

it is 3
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Tritium. H is known as tritium and contains one proton and two neutrons in its nucleus (mass number = 3).
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It's 3. For some elements there is more than one mass number. So for hydrogen it has three different mass numbers. From that the third one is called tritium and it's 3 for hydrogen
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Mass No . of tritium is 3 and valency is also 3
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3 is
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3 is the answere
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H is known as tritium. It's mass number is 3. Because it has 1 electron and 2 protons.
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