q the radioactive isotope 84pa214 undergoes a

Question

Q. The radioactive isotope 84Pa214 undergoes a successive disintegration of two α decays and two β decays. Find the atomic number and the mass number of the resulting isotope.

For two α decays:

₈₄Pa²¹⁴ → ₈₂ A ²¹⁰ → ₈₀ B ²⁰⁶

For two β decays :

₈₀ B ²⁰⁶ → ₈₁ C ²⁰⁶ → ₈₂ D ²⁰⁶

The resulting isotope is direct with mass number 206 and atomic number 82