01-06-2015
Chemistry

Answered

Which particle has a mass that is approximately the same as the mass of a proton?
(1) an alpha particle (3) a neutron
(2) a beta particle (4) a positron

Answer :

IwAsSoMeGuY IwAsSoMeGuY

01-06-2015

Protons have a mass of 1
Alpha particles are Helium nuclei, so have mass 4
Beta particles are electrons, and so have mass 0
Neutrons have mass 1
Positrons are anti-matter forms of electrons, and so have mass 0
The answer is (3) a neutron

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