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5 January, 01:20

2 Which particles have approximately the same mass?

(1) an electron and an alpha particle

(2) an electron and a proton

(3) a neutron and an alpha particle

(4) a neutron and a proton

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  1. 5 January, 01:41
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    An electron has a relative mass of 0, whilst an alpha particle has a relative mass of 4

    An electron has a relative mass of 0, whilst a proton has a relative mass of 1

    A neutron has a relative mass of 1, whilst an alpha particle has a relative mass of 4

    A neutron has a relative mass of 1, and a proton also has a relative mass of 1
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