Question
The radioactive isotope D decays according to the sequence.
If the mass number and atomic number of D2 are 176 and 71 respectively, what is (i) the mass number, (ii) atomic number of D?
Solution
The isotope's atomic number reduces by 1 and mass number remains the same while undergoing decay.
When it udergoes decay, mass number increases by 4 and atomic number by 2.
Therefore,
Decay process can be written as:
When it udergoes decay, mass number increases by 4 and atomic number by 2.
Therefore,
Decay process can be written as:
(i) Mass number of D = 172.
(ii) Atomic number of D = 70.
