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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

Verified Answer :

IwAsSoMeGuY

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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