A radioactive nucleus (initial mass number A and atomic number Z) emits 2α and 2 positrons. The ratio of number of neutrons to that of proton in the final nucleus will be
A. [A - Z – 4] / [Z - 2]
B. [A - Z – 2] / [Z - 6]
C. [A - Z – 4] / [Z - 6]
D. [A - Z -12] / [Z - 4]
Answer:B
A radioactive nucleus (initial mass number A and atomic number Z) emits 2α and 2 positrons. The ratio of number of neutrons to that of proton in the final nucleus will be
A. [A - Z – 4] / [Z - 2] B. [A - Z – 2] / [Z - 6] C. [A - Z – 4] / [Z - 6] D. [A - Z -12] / [Z - 4]