Question

When Po-218 decays to Pb-210, two alpha particles are emitted. How many beta-minus particles are emitted in this decay sequence?

Answer 1

Po-218 کار را در افراد اور اس For a Motors - 7 P6210 In case on the atomic numbers increases by emission, Pb-210 82' a alpha particle emission, atomic number decreases by 2 unit and mass memben decreases by & unit, the mass numbers, nemains fix in both parent and daughtero niecei and

emission by the . Hene, on the decay Sequence, two(2) alpha particles are emitted :: Atomic mass decreases decneases by Of 20-parrticles > 2x2 unit Kat in this decay Sequence 'r' particles emitted. -- Atomic mass increases by the emission of a ß paroficles e 1x2 = 8 dunit, -". Net atomic mass deeneases (4 - Junit Now, in the decay Sequence total atomic mass decreases from 284-82 84" > 2 unit ~ 4-xa2 On a a4-222 222 Therefore total two (2 :) ß particles que emitted in this decay Sequence. to Pb 82