Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन
JEE Main & Advanced
Chemistry
Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन
Question Bank
Causes of radioactivity and Group displacement law
question_answer
A certain nuclide has a half-life period of 30 minutes. If a sample containing 600 atoms is allowed to decay for 90 minutes, how many atoms will remain [NCERT 1978]