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5 May, 09:41

What is the mass number of the particle emitted from the nucleus during beta minus decay? What kind of charge does the particle emitted from the nucleus during beta minus decay have?

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  1. 5 May, 11:48
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    Beta decay is exclusively the emission of electrons ... or its

    oppositely charged relative, the positron ... from an atomic

    nucleus.

    Beta-minus is the emission of an electron, with a negative charge.

    The change in the mass of the nucleus, if any, is minuscule.

    The mass number of a nucleus is the sum of its protons and

    neutrons, and the mass of an emitted electron is something

    like 0.0005 the mass of one of those.
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