manganese has an atomic mass
of 50 and an atomic number of 25, when it undergo a positron decay , one of its
proton decayed into a neutron, positron and an electron neutrino. the number of
protons decrease by one and so the atomic number reduces by one, therefore the
new atom will have an atomic number of 24
while the atomic mass remain constant because the total number of
nucleon does not change. a new atom called the daughter nucleus is formed
called chromium.
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