A hypothetical radioactive nucleus decays according to the following series _ 72 ~A ^ 1!B…
Physics · NEET · NTA Exams — Atoms and Nuclei
A hypothetical radioactive nucleus decays according to the following series
\({ }_{72} \mathrm{~A}^{1!B} \xrightarrow{\square} \mathrm{~A}_{1}^{a^{-}} \mathrm{A}_{2} \xrightarrow{\square} \mathrm{~A}_{3} \xrightarrow{\psi} \mathrm{~A}_{4}\)
If the mass number and atomic number of A are respectively 180 and 72. Then, the atomic number and mass number of A4 will respectively be:
- 69, 171
- 70, 172
- 68, 172
- 69, 172
Answer
(D) 69, 172
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