Q13.4Multiple choice
M x and M y denote the atomic masses of the parent and the daughter nuclei respectively in a radioactive decay. The Q-value for a β – decay is Q 1 and that for a β + decay is Q 2. If m e denotes the mass of an electron, then which of the following statements is correct?
- (a)Q 1 = (M x – M y) c 2 and Q2 = (M x – M y – 2m e)c2
- (b)Q 1 = (M x – M y) c 2 and Q2 = (M x – M y )c 2
- (c)Q 1 = (M x – M y – 2m e) c2 and Q2 = (M x – M y +2 m e)c 2
- (d)Q 1 = (M x – M y + 2m e) c2 and Q2 = (M x – M y +2 m e)c2