Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन
JEE Main & Advanced
Chemistry
Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन
Question Bank
Isotopes-Isotones and Nuclear isomers
question_answer
If a radioactive isotope with atomic number A and mass number M emits an \[\alpha \]-particle, the atomic number and mass number of that new isotope will become [NCERT 1980]