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Nuclei — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsNuclei1 Mark
Question
The radioactive isotope D decays according to the sequence $\text{D}\xrightarrow{\beta}^{- }$ $\text{D}_{1}\xrightarrow{\alpha - particle}$ $\text{D}_{2}$If the mass number and atomic number of $\text{D}_{1}$ are 176 and 71 respectively, what is (i) the mass number (ii) atomic number of D?
✓

Answer

  1. Mass number 180
  2. Atomic number 72
Alternate Answer
$\text{D}^{180}_{72}$

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