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8 May, 14:00

Which particle has the least mass? (1) alpha (3) neutron

(2) beta particle (4) proton

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  1. 8 May, 14:21
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    Alpha particle has a mass of 4 (Two protons and two neutrons)

    Neutron has a mass of 1

    Beta particle has a mass of about 0 (Electron)

    Proton has a mass of 1

    So the answer is (2) Beta particle
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