Mx and My denote the atomic masses of the parent and the daughter nuclei respectively in a radioactive decay. The Q-value for a β– decay is Q1 and that for a β+ decay is Q2. If me denotes the mass of an electron, then which of the following statements is correct?
1
Q1 = (Mx – My) c2 and Q2 = (Mx – My – 2me )c2
2
Q1 = (Mx – My) c2 and Q2 = (Mx – My)c2
3
Q1 = (Mx – My – 2me )c2 and Q2 = (Mx – My + 2me )c2
4
Q1 = (Mx – My + 2me )c2 and Q2 = (Mx – My + 2me )c2